the first vintage of the from of heat it must be observe that the from of  anything be inherent as appear clear from our premise in each individual  instance in which the thing itself be inherent or it will not be a from no  contradictory instance therefore can be allege the from however be find to be  much more conspicuous and evident in some instance than in other in those for  example where its nature be less restrain and embarrass and reduce to rule by  other nature such instance we be wont to term coruscation or conspicuous  instance we must proceed then to the first vintage of the from of heat from  the instance take collective as well as single the nature who limit be heat  appear to be motion this be chief exhibit in flame which be in constant motion  and in warm or boil liquid which be likewise in constant motion it be also  show in the excitement or increase of heat by motion as by bellows and draught  for which see Inst Tab and by other species of motion as in Inst and Tab it be  also show by the extinction of fire and heat upon any strong pressure which  restrain and put a stop to motion for which see Inst and Tab it be further  show by this circumstance namely that every substance be destroy or at least  material change by strong and powerful fire and heat whence it be clear that  tumult and confusion be occasion by heat together with a violent motion in the  internal part of body and this gradual tend to their dissolution what we have  say with regard to motion must be thus understand when take as the genus of  heat it must not be think that heat generate motion or motion heat though in  some respect this be true but that the very essence of heat or the substantial  self of heat be motion and nothing else limit however by certain difference  which we will present add after give some caution for avoid ambiguity sensible  heat be relative and regard man not universe and be right hold to be mere the  effect of heat on animal spirit it be even variable in itself since the same  body in different state of sensation excite the feel of heat and of cold this  be show by Inst Tab nor shall we confound the communication of heat or its  transitive nature by which a body grow warm at the approach of a heat body  with the from of heat for heat be one thing and heat another heat can be  excite by friction without any previous heat body and therefore heat be  exclude from the from of heat Even when heat be excite by the approach of a  hot body this depend not on the from of heat but on another more profound and  common nature namely that of assimilation and multiplication about which a  separate inquiry must be make the notion of fire be vulgar and of no  assistance it be mere compound of the conjunction of heat and light in any  body as in ordinary flame and redhot substance lie aside all ambiguity  therefore we must last consider the true difference which limit motion and  render it the from of heat I the first difference be that heat be a expansive  motion by which the body strive to dilate itself and to occupy a great space  than before this difference be principal see in flame where the smoke or thick  vapour be clear dilate and burst into flame it be also show in all boil liquid  which swell rise and boil up to the sight and the process of expansion be urge  forward till they be convert into a much more extend and dilate body than the  liquid itself such as steam smoke or air it be also show in wood and  combustible where exudation sometime take place and evaporation always it be  also show in the melt of metal which be very compact do not easy swell and  dilate but yet their spirit when dilate and desirous of further expansion  force and urge its thick part into dissolution and if the heat be push still  further reduce a considerable part of they into a volatile state it be also  show in iron or stone which though not melt or dissolve be however soften the  same circumstance take place in stick of wood which become flexible when a  little heat in warm ash it be most ready observe in air which instant and  manifest expand with a small degree of heat as in Inst Tab it be also show in  the contrary nature of cold for cold contract and narrows every substance so  that in intense frost nail fall out of the wall and brass crack and heat glass  expose sudden to the cold crack and break so the air by a slight degree of  cold contract itself as in Inst Tab more will be say of this in the inquiry  into cold nor be it to be wonder at if cold and heat exhibit many common  effect for which see Inst Tab since two difference of which we shall present  speak belong to each nature although in the present difference the effect be  diametrical oppose to each other for heat occasion a expansive and dilate  motion but cold a contract and condense motion two the second difference be a  modification of the precede namely that heat be a expansive motion tend  towards the exterior but at the same time bear the body upward for there be no  doubt that there be many compound motion as a arrow or dart for instance have  both a rotatory and progressive motion in the same way the motion of heat be  both expansive and tend upward this difference be show by put the tongue or  poker into the fire if place perpendicular with the hand above they soon burn  it but much less speedy if the hand hold they slope or from below it be also  conspicuous in distillation per decent which man be wont to employ with  delicate flower who scent easy evaporate their industry have devise place the  fire above instead of below that it may scorch less for not only flame but all  heat have a upward tendency let a experiment be make on the contrary nature of  cold whether its contraction be downward as the expansion of heat be upward  take therefore two iron rod or two glass tube alike in other respect and warm  they a little and place a sponge dip in cold water or some snow below the one  and above the other we be of opinion that the extremity will grow cold in that  rod first where it be place beneath as the contrary take place with regard to  heat III the three difference be this that heat be not a uniform expansive  motion of the whole but of the small particle of the body and this motion be  at the same time restrain repulse and reflect become alternate perpetual hurry  strive struggle and irritate by the repercussion which be the source of the  violence of flame and heat but this difference be chief show in flame and boil  liquid which always hurry swell and subside again in detach part it be also  show in body of such hard texture as not to swell or dilate in bulk such as  redhot iron in which the heat be most violent it be also show by the fire burn  most brisk in the cold weather it be also show by this that when the air be  dilate in the thermometer uniform and equable without any impediment or  repulsion the heat be not perceptible in confine draught also although they  break out very violent no remarkable heat be perceive because the motion  affect the whole without any alternate motion in the particle for which reason  try whether flame do not burn more at the side than in its centre it be also  show in this that all burn proceed by the minute poor of body undermine  penetrate pierce and prick they as if with a infinite number of needle point  hence all strong acid if adapt to the body on which they act exhibit the  effect of fire from their corrode and pungent nature the difference of which  we now speak be common also to the nature of cold in which the contract motion  be restrain by the resistance of expansion as in heat the expansive motion be  restrain by the resistance of contraction whether therefore the particle of  matter penetrate inward or outward the reason be the same though the power be  very different because we have nothing on earth which be intense cold IV the  four difference be a modification of the precede namely that this stimulate or  penetrate motion shall be rapid and never sluggish and shall take place not in  the very minute particle but rather in those of some tolerable dimension it be  show by compare the effect of fire with those of time time dry consume  undermine and reduce to ash as well as fire and perhaps to a much fine degree  but as its motion be very slow and attack very minute particle no heat be  perceive it be also show in a comparison of the dissolution of iron and gold  for gold be dissolve without the excitement of any heat but iron with a  vehement excitement of it although most in the same time because in the former  the penetration of the separate acid be mild and gentle insinuate itself and  the particle of gold yield easy but the penetration of iron be violent and  attend with some struggle and its particle be more obstinate it be partial  show also in some gangrene and mortification of flesh which do not excite  great heat or pain from the gentle nature of the putrefaction let this suffice  for a first vintage or the commencement of the interpretation of the from of  heat by the liberty of the understanding from this first vintage the from or  true definition of heat consider relative to the universe and not to the sense  be brief thus heat be a expansive motion restrain and strive to exert itself  in the small particle the expansion be modify by its tendency to rise though  expand towards the exterior and the effort be modify by its not be sluggish  but active and somewhat violent with regard to the operative definition the  matter be the same if you be able to excite a dilate or expansive motion in  any natural body and so to repress that motion and force it on itself as not  to allow the expansion to proceed equal but only to be partial exert and  partial repress you will beyond all doubt produce heat without any  consideration as to whether the body be of earth or elementary as they term it  or imbue with celestial influence luminous or opaque rare or dense local  expand or contain within the bind of its first dimension verge to dissolution  or remain fix animal vegetable or mineral water or oil or air or any other  substance whatever susceptible of such motion sensible heat be the same but  consider relative to the sense let we now proceed to further help XXI after  our table of first review our rejection or exclusive table and the first  vintage derive from they we must advance to the remain help of the  understanding with regard to the interpretation of nature and a true and  perfect induction in offer which we will take the example of cold and heat  where table be necessary but where few instance be require we will go through  a variety of other so as neither to confound investigation nor to narrow our  doctrine in the first place therefore we will treat of prerogative instance of  the support of induction of the correction of induction of vary the  investigation accord to the nature of the subject of the prerogative nature  with respect to investigation or of what shall be the first or last object of  our research of the limit of investigation or a synopsis of all nature that  exist in the universe of the application to practical purpose or of what  relate to man of the preparation for investigation and last of the ascend and  descend scale of axiom XXII among the prerogative instance we will first  mention solitary instance solitary instance be those which exhibit the require  nature in subject that have nothing in common with any other subject than the  nature in question or which do not exhibit the require nature in subject  resemble other in every respect except that of the nature in question for  these instance manifest remove prolixity and accelerate and confirm exclusion  so that a few of they be of as much avail as many for instance let the inquiry  be the nature of colour prism crystalline gem which yield colour not only  internal but on the wall due etcetera be solitary instance for they have  nothing in common with the fix colour in flower and colour gem metal wood  etcetera except the colour itself hence we easy deduce that colour be nothing  but a modification of the image of the incident and absorb light occasion in  the former case by the different degree of incidence in the latter by the  various texture and from of body these be solitary instance as regard  similitude again in the same inquiry the distinct vein of white and black in  marble and the variegate colour of flower of the same species be solitary  instance for the black and white of marble and the spot of white and purple in  the flower of the stock agree in every respect but that of colour thence we  easy deduce that colour have not much to do with the intrinsic nature of any  body but depend only on the coarse and as it be mechanical arrangement of the  part these be solitary instance as regard difference we call they both  solitary or wild to borrow a word from the astronomer XXIII in the second rank  of prerogative instance we will consider migrate instance in these the require  nature pass towards generation have no previous existence or towards  corruption have first exist in each of these division therefore the instance  be always twofold or rather it be one instance first in motion or on its  passage and then bring to the opposite conclusion these instance not only  hasten and confirm exclusion but also reduce affirmation or the from itself to  a narrow compass for the from must be something confer by this migration or on  the contrary remove and destroy by it and although all exclusion advance  affirmation yet this take place more direct in the same than in different  subject but if the from as it be quite clear from what have be advance exhibit  itself in one subject it lead to all the more simple the migration be the more  valuable be the instance these migrate instance be moreover very useful in  practice for since they manifest the from couple with that which cause or  destroy it they point out the right practice in some subject and thence there  be a easy transition to those with which they be most alley there be however a  degree of danger which demand caution namely lest they shall refer the from  too much to its efficient cause and imbue or at least tinge the understanding  with a false notion of the from from the appearance of such cause which be  never more than a vehicle or conveyance of the from this may easy be remedy by  a proper application of exclusion let we then give a example of a migrate  instance let whiteness be the require nature a instance which pass towards  generation be glass in its entire and in its powder state or water in its  natural state and when agitate to froth for glass when entire and water in its  natural state be transparent and not white but powder glass and the froth of  water be white and not transparent we must inquire therefore what have happen  to the glass or water in the course of this migration for it be manifest that  the from of whiteness be convey and introduce by the bruise of the glass and  the agitation of the water but nothing be find to have be introduce but a  diminish of the part of the glass and water and the insertion of air yet this  be no slight progress towards discover the from of whiteness namely that two  body in themselves more or less transparent as air and water or air and glass  when bring into contact in minute portion exhibit whiteness from the unequal  refraction of the ray of light but here we must also give a example of the  danger and caution of which we speak for instance it will ready occur to a  understanding pervert by efficient that air be always necessary for produce  the from of whiteness or that whiteness be only generate by transparent body  which supposition be both false and prove to be so by many exclusion nay it  will rather appear without any particular regard to air or the like that all  body which be even in such of their part as affect the sight exhibit  transparency those which be uneven and of simple texture whiteness those which  be uneven and of compound but regular texture all the other colour except  black but those which be uneven and of a compound irregular and confuse  texture exhibit blackness a example have be give therefore of a instance  migrate towards generation in the require nature of whiteness a instance  migrate towards corruption in the same nature be that of dissolve froth or  snow for they lose their whiteness and assume the transparency of water in its  pure state without air nor shall we by any mean omit to state that under  migrate instance we must comprehend not only those which pass towards  generation and destruction but also those which pass towards increase or  decrease for they too assist in the discovery of the from as be clear from our  definition of a from and the table of degree hence paper which be white when  dry be less white when moisten from the exclusion of air and admission of  water and tend more to transparency the reason be the same as in the above  instance XXIV in the three rank of prerogative instance we will class  conspicuous instance of which we speak in our first vintage of the from of  heat and which we be also wont to call coruscation or free and predominant  instance they be such as show the require nature in its bear substantial shape  and at its height or great degree of power emancipate and free from all  impediment or at least overcome suppress and restrain they by the strength of  its quality for since every body be susceptible of many unite from of nature  in the concrete the consequence be that they mutual deaden depress break and  confine each other and the individual from be obscure but there be some  subject in which the require nature exist in its full vigour rather than in  other either from the absence of any impediment or the predominance of its  quality such instance be eminent conspicuous but even in these care must be  take and the hastiness of the understanding check for whatever make a show of  the from and force it forward be to be suspect and recourse must be have to  severe and diligent exclusion for example let heat be the require nature the  thermometer be a conspicuous instance of the expansive motion which as have be  observe constitute the chief part of the from of heat for although flame clear  exhibit expansion yet from its be extinguish every moment it do not exhibit  the progress of expansion boil water again from its rapid conversion into  vapour do not so well exhibit the expansion of water in its own shape while  redhot iron and the like be so far from show this progress that on the  contrary the expansion itself be scarce evident to the sense on account of its  spirit be repress and weaken by the compact and coarse particle which subdue  and restrain it but the thermometer strike exhibit the expansion of the air as  be evident and progressive durable and not transitory take another example let  the require nature be weight quicksilver be a conspicuous instance of weight  for it be far heavy than any other substance except gold which be not much  heavy and it be a better instance than gold for the purpose of indicate the  from of weight for gold be solid and consistent which quality must be refer to  density but quicksilver be liquid and team with spirit yet much heavy than the  diamond and other substance consider to be most solid whence it be show that  the from of gravity or weight predominate only in the quantity of matter and  not in the close fit of it XXV in the four rank of prerogative instance we  will class clandestine instance which we be also wont to call twilight  instance they be as it be oppose to the conspicuous instance for they show the  require nature in its low state of efficacy and as it be its cradle and first  rudiment make a effort and a sort of first attempt but conceal and subdue by a  contrary nature such instance be however of great importance in discover from  for as the conspicuous tend easy to difference so do the clandestine best lead  to genera that be to those common nature of which the require nature be only  the limit as a example let consistency or that which confine itself be the  require nature the opposite of which be a liquid or flow state the clandestine  instance be such as exhibit some weak and low degree of consistency in fluid  as a water bubble which be a sort of consistent and bind pellicle from out of  the substance of the water so eaves drop if there be enough water to follow  they draw themselves out into a thin thread not to break the continuity of the  water but if there be not enough to follow the water from itself into a round  drop which be the best from to prevent a breach of continuity and at the  moment the thread cease and the water begin to fall in drop the thread of  water recoil upward to avoid such a breach nay in metal which when melt be  liquid but more tenacious the melt drop often recoil and be suspend there be  something similar in the instance of the child look glass which little boy  will sometime from of spittle between rush and where the same pellicle of  water be observable and still more in that other amusement of child when they  take some water render a little more tenacious by soap and inflate it with a  pipe from the water into a sort of castle of bubble which assume such  consistency by the interposition of the air as to admit of be throw some  little distance without burst the best example be that of froth and snow which  assume such consistency as almost to admit of be cut although compose of air  and water both liquid all these circumstance clear show that the term liquid  and consistent be mere vulgar notion adapt to the sense and that in reality  all body have a tendency to avoid a breach of continuity faint and weak in  body compose of homogeneous part as be the case with liquid but more vivid and  powerful in those compose of heterogeneous part because the approach of  heterogeneous matter bind body together while the insinuation of homogeneous  matter loosen and relax they again to take another example let the require  nature be attraction or the cohesion of body the most remarkable conspicuous  instance with regard to its from be the magnet the contrary nature to  attraction be non-attraction though in a similar substance thus iron do not  attract iron lead lead wood wood nor water water but the clandestine instance  be that of the magnet arm with iron or rather that of iron in the magnet so  arm for its nature be such that the magnet when arm do not attract iron more  powerful at any give distance than when unarm but if the iron be bring in  contact with the arm magnet the latter will sustain a much great weight than  the simple magnet from the resemblance of substance in the two portion of iron  a quality altogether clandestine and hide in the iron until the magnet be  introduce it be manifest therefore that the from of cohesion be something  which be vivid and robust in the magnet and hide and weak in the iron it be to  be observe also that small wooden arrow without a iron point when discharge  from large mortar penetrate further into wooden substance such as the rib of  ship or the like than the same arrow point with iron owe to the similarity of  substance though this quality be previous latent in the wood again although in  the mass air do not appear to attract air nor water water yet when one bubble  be bring near another they be both more ready dissolve from the tendency to  contact of the water with the water and the air with the air these clandestine  instance which be as have be observe of the most important service be  principal to be observe in small portion of body for the large mass observe  more universal and general from as will be mention in its proper place XXVI in  the five rank of prerogative instance we will class constitutive instance  which we be wont also to call collective instance they constitute a species or  lesser from as it be of the require nature for since the real from which be  always convertible with the give nature lie at some depth and be not easy  discover the necessity of the case and the infirmity of the human  understanding require that the particular from which collect certain group of  instance but by no mean all into some common notion shall not be neglect but  most diligent observe for whatever unite nature even imperfect open the way to  the discovery of the from the instance therefore which be serviceable in this  respect be of no mean power but endow with some degree of prerogative here  nevertheless great care must be take that after the discovery of several of  these particular from and the establish of certain partition or division of  the require nature derive from they the human understanding do not at once  rest satisfy without prepare for the investigation of the great or lead from  and take it for grant that nature be compound and divide from its very root  despise and reject any further union as a point of superfluous refinement and  tend to mere abstraction for instance let the require nature be memory or that  which excite and assist memory the constitutive instance be order or  distribution which manifest assist memory topic or commonplace in artificial  memory which may be either place in their literal sense as a gate a corner a  window and the like or familiar person and mark or anything else provide it be  arrange in a determinate order as animal plant and word letter character  historical person and the like of which however some be more convenient than  other all these commonplace material assist memory and raise it far above its  natural strength verse too be recollect and learned more easy than prose from  this group of three instance order the commonplace of artificial memory and  verse be constitute one species of aid for the memory which may be well term a  separation from infinity for when a man strive to recollect or recall anything  to memory without a preconceive notion or perception of the object of his  search he inquire about and labour and turn from point to point as if involve  in infinity but if he have any preconceive notion this infinity be separate  off and the range of his memory be bring within close limit in the three  instance give above the preconceive notion be clear and determine in the first  it must be something that agree with order in the second a image which have  some relation or agreement with the fix commonplace in the three word which  fall into a verse and thus infinity be divide off other instance will offer  another species namely that whatever bring the intellect into contact with  something that strike the sense the principal point of artificial memory  assist the memory other again offer another species namely whatever excite a  impression by any powerful passion as fear shame wonder delight assist the  memory other instance will afford another species thus those impression remain  most fix in the memory which be take from the mind when clear and least occupy  by precede or succeed notion such as the thing we learn in childhood or  imagine before sleep and the first time of any circumstance happen other  instance afford the follow species namely that a multitude of circumstance or  handle assist the memory such as write in paragraph read aloud or recitation  last other instance afford still another species thus the thing we anticipate  and which rouse our attention be more easy remember than transient event as if  you read any work twenty time over you will not learn it by heart so ready as  if you be to read it but ten time try each time to repeat it and when your  memory fail you look into the book there be therefore six lesser from as it be  of thing which assist the memory namely the separation of infinity the  connection of the mind with the sense the impression in strong passion the  impression on the mind when pure the multitude of handle anticipation again  for example sake let the require nature be taste or the power of taste the  follow instance be constitutive those who do not smell but be deprive by  nature of that sense do not perceive or distinguish rancid or putrid food by  their taste nor garlic from rise and the like again those who nostril be  obstruct by accident such as a cold do not distinguish any putrid or rancid  matter from anything sprinkle with rise water if those who suffer from a cold  blow their nose violent at the very moment in which they have anything fetid  or perfume in their mouth or on their palate they instant have a clear  perception of the fetor or perfume these instance afford and constitute this  species or division of taste namely that it be in part nothing else than a  internal smell pass and descend through the upper passage of the nostril to  the mouth and palate but on the other hand those who power of smell be  deficient or obstruct perceive what be salt sweet pungent acid rough and  bitter and the like as well as any one else so that the taste be clear  something compound of the internal smell and a exquisite species of touch  which we will not here discuss again as another example let the require nature  be the communication of quality without intermixture of substance the instance  of light will afford or constitute one species of communication heat and the  magnet another for the communication of light be momentary and immediate  arrest upon the removal of the original light but heat and the magnetic force  when once transmit to or excite in another body remain fix for a considerable  time after the removal of the source in fine the prerogative of constitutive  instance be considerable for they material assist the definition especial in  detail and the division or partition of nature concern which Plato have well  say he who can proper define and divide be to be consider a God XXVII in the  six rank of prerogative instance we will place similar or proportionate  instance which we be also wont to call physical parallel or resemblance they  be such as exhibit the resemblance and connection of thing not in minor from  as the constitutive do but at once in the concrete they be therefore as it be  the first and low step towards the union of nature nor do they immediate  establish any axiom but mere indicate and observe a certain relation of body  to each other but although they be not of much assistance in discover from yet  they be of great advantage in disclose the frame of part of the universe upon  who member they practice a species of anatomy and thence occasional lead we  gentle on to sublime and noble axiom especial such as relate to the  construction of the world rather than to simple nature and from as a example  take the follow similar instance a mirror and the eye the formation of the ear  and place which return a echo from such similarity beside observe the  resemblance which be useful for many purpose it be easy to collect and from  this axiom that the organ of the sense and body which produce reflection to  the sense be of a similar nature again the understanding once inform of this  rise easy to a high and noble axiom namely that the only distinction between  sensitive and inanimate body in those point in which they agree and sympathize  be this in the former animal spirit be add to the arrangement of the body in  the latter it be want so that there may be as many sense in animal as there be  point of agreement with inanimate body if the animate body be perforate so as  to allow the spirit to have access to the limb proper dispose for action as a  fit organ and on the other hand there be without doubt as many motion in a  inanimate as there be sense in the animate body though the animal spirit be  absent there must however be many more motion in inanimate body than sense in  the animate from the small number of organ of sense a very plain example of  this be afford by pain for as animal be liable to many kind and various  description of pain such as those of burn of intense cold of prick squeeze  stretch and the like so be it most certain that the same circumstance as far  as motion be concern happen to inanimate body such as wood or stone when burn  freeze prick cut bend bruise and the like although there be no sensation owe  to the absence of animal spirit again wonder as it may appear the root and  branch of tree be similar instance for every vegetable swell and throw out its  constituent part towards the circumference both upward and downward and there  be no difference between the root and branch except that the root be bury in  the earth and the branch be expose to the air and sun for if one take a young  and vigorous shoot and bend it down to a small portion of lose earth although  it be not fix to the ground yet will it immediate produce a root and not a  branch and vice line if earth be place above and so force down with a stone or  any hard substance as to confine the plant and prevent its branch upward it  will throw out branch into the air downward the gum of tree and most rock gem  be similar instance for both of they be exudation and filter juice derive in  the former instance from tree in the latter from stone the brightness and  clearness of both arise from a delicate and accurate filter for near the same  reason the hair of animal be less beautiful and vivid in its colour than the  plumage of most bird because the juice be less delicate filter through the  skin than through the quill the scrotum of male and matrix of female be also  similar instance so that the noble formation which constitute the difference  of the sex appear to differ only as to the one be internal and the other  external a great degree of heat cause the genital to protrude in the male  while the heat of the female be too weak to effect this they be retain  internal the fin of fish and the foot of quadruped or the foot and wing of  bird be similar instance to which Aristotle add the four fold in the motion of  serpent so that in the formation of the universe the motion of animal appear  to be chief effect by four joint or bend the tooth of land animal and the beak  of bird be similar instance whence it be clear that in all perfect animal  there be a determination of some hard substance towards the mouth again the  resemblance and conformity of man to a invert plant be not absurd for the head  be the root of the nerve and animal faculty and the seminal part be the low  not include the extremity of the leg and arm but in the plant the root which  resemble the head be regular place in the low and the seed in the high part  last we must particular recommend and suggest that man present industry in the  investigation and compilation of natural history be entire change and direct  to the reverse of the present system for it have hitherto be active and  curious in note the variety of thing and explain the accurate difference of  animal vegetable and mineral most of which be the mere sport of nature rather  than of any real utility as concern the science pursuit of this nature be  certain agreeable and sometime of practical advantage but contribute little or  nothing to the through investigation of nature our labour must therefore be  direct towards inquire into and observe resemblance and analogy both in the  whole and its part for they unite nature and lie the foundation of the science  here however a severe and rigorous caution must be observe that we only  consider as similar and proportionate instance those which as we first observe  point out physical resemblance that be real and substantial resemblance deep  find in nature and not casual and superficial much less superstitious or  curious such as those which be constant put forward by the writer on natural  magic the most idle of man and who be scarce fit to be nam in connection with  such serious matter as we now treat of who with much vanity and folly describe  and sometime too invent unmeaning resemblance and sympathy but leave such to  themselves similar instance be not to be neglect in the great portion of the  world conformation such as Africa and the Peruvian continent which reach to  the strait of Magellan both of which possess a similar isthmus and similar  cape a circumstance not to be attribute to mere accident again the new and old  world be both of they broad and expand towards the north and narrow and point  towards the south again we have very remarkable similar instance in the  intense cold towards the middle region as it be term of the air and the  violent fire which be often find to burst from subterraneous spot the  similarity consist in both be end and extreme the extreme of the nature of  cold for instance be towards the boundary of heaven and that of the nature of  heat towards the centre of the earth by a similar species of opposition or  rejection of the contrary nature last in the axiom of the science there be a  similarity of instance worthy of observation thus the rhetorical trope which  be call surprise be similar to that of music term the decline of a cadence  again the mathematical postulate that thing which be equal to the same be  equal to one another be similar to the from of the syllogism in logic which  unite thing agree in the middle term last a certain degree of sagacity in  collect and search for physical point of similarity be very useful in many  respect XXVIII in the seven rank of prerogative instance we will place  singular instance which we be also wont to call irregular or heteroclite to  borrow a term from the grammarian they be such as exhibit body in the concrete  of a apparent extravagant and separate nature agree but little with other  thing of the same species for while the similar instance resemble each other  those we now speak of be only like themselves their use be much the same with  that of clandestine instance they bring out and unite nature and discover  genera or common nature which must afterward be limit by real difference nor  shall we desist from inquiry until the property and quality of those thing  which may be deem miracle as it be of nature be reduce to and comprehend in  some from or certain law so that all irregularity or singularity may be find  to depend on some common from and the miracle only consist in accurate  difference degree and rare coincidence not in the species itself man  meditation proceed no further at present than just to consider thing of this  kind as the secret and vast effort of nature without a assignable cause and as  it be exception to general rule as example of singular instance we have the  sun and moon among the heavenly body the magnet among mineral quicksilver  among metal the elephant among quadruped the venereal sensation among the  different kind of touch the scent of sport dog among those of smell the letter  S too be consider by the grammarian as Himself noble birth from its easy unite  with double or triple consonant which no other letter will these instance be  of great valve because they excite and keep alive inquiry and correct a  understanding deprave by habit and the common course of thing