inquisition touch the compound of metal TO make proof of the incorporation of  iron with flint or other stone for if it can be incorporate without over great  charge or other incommodity the cheapness of the flint or stone do make the  compound stuff profitable for diverse use the doubt may be three in number  first whether they will incorporate at all otherwise than to a body that will  not hold well together but become brittle and uneven second although it shall  incorporate well yet whether the stuff will not be so stubborn as it will not  work well with a hammer whereby the charge in work will overthrow the  cheapness of the material three whether they will incorporate except the iron  and stone be first calcine into powder and if not whether the charge of the  calcination will not eat out the cheapness of the material the use be most  probable to be first for the implement of the kitchen as spit range Cobirons  pot c then for the war as ordinance Portcullasses grate chain c note the fine  work of iron be not so probable to be serve with such a stuff as lock clock  small chain c because the stuff be not like to be tough enough for the better  use in comparison of iron it be like the stuff will be far light for the  weight of iron to flint be double and a three part and second it be like to  rust not so easy but to be more clean the way of trial be two first by the  iron and stone of themselves wherein it must be inquire what be the stone that  do easy melt second with a additament wherein brimstone be approve to help to  the melt of iron or steel but then it must be consider whether the charge of  the additament will not destroy the profit it must be know also what  proportion of the stone the iron will receive to incorporate well with it and  that with once melt for if either the proportion be too small or that it can  be receive but piece meal by several melt the work can be of valve to make  proof of the incorporate of iron and brass for the cheapness of the iron in  comparison of the brass if the use may be serve do promise profit the doubt  will be touch their incorporate for that it be approve that iron will not  incorporate neither with brass nor other metal of it self by simple fire so as  the inquiry must be upon the calcination and the additament and the charge of  they the use will be for such thing as be now make of brass and may be as well  serve by the compound stuff wherein the doubt will be chief of the toughness  and of the beauty first therefore if brass ordinance can be make of the  compound stuff in respect of the cheapness of the iron it will be of great use  the vantage which brass ordinance have over iron be chief as I suppose because  it will hold the blow though it be drive far thin than the iron can be whereby  it save both in the quantity of the material and in the charge and commodity  of mount carriage in regard by reason of the thinness it bear much less weight  there may be also somewhat in be not so easy overheat second for the beauty  those thing wherein the beauty or luster be esteem be andirons and all manner  of image and statue and column and tomb and the like so as the doubt will be  double for the beauty the one whether the colour will please so well because  it will not be so like gold as brass the other whether it will polish so well  wherein for the latter it be probable it will for steel gloss be more  resplendent than the like Plataeae of brass will be and so be the glit of a  blade and beside I take it andiron brass which they call white brass have some  mixture of tin to help the luster and for the golden colour it may be by some  small mixture of orpiment such as they use to brass in the Yellow alchemy will  easy recover that which the iron lose of this the eye must be the judge upon  proof make but now for pan pot Curfues counter and the like the beauty will  not be so much respect so as the compound stuff be like to pass for the better  use of the compound stuff it will be sweet and clean than brass alone which  yield a smell or soilness and therefore may be better for the vessel of the  kitchen and brew it will also be hard than brass where hardness may be require  for the trial the doubt will be two first the over weight of brass towards  iron which will make iron float on the top in the melt this perhaps will be  help with the calaminar stone which consent so well with brass and as I take  it be light than iron the other doubt will be the stiffness and dryness of  iron to melt which must be help either by moisten the iron or open it for the  first perhaps some mixture of lead will help which be as much more liquid than  brass as iron be less liquid the open may be help by some mixture of sulphur  so as the trial will be with brass iron calaminar stone and sulphur and then  again with the same composition and a addition of some lead and in all this  the charge must be consider whether it eat not out the profit of the cheapness  of iron there be two proof to be make of incorporation of metal for  magnificence and delicacy the one for the eye and the other for the ear statue  metal and bell metal and trumpet metal and string metal in all these though  the mixture of brass or copper shall be dear than the brass it self yet the  pleasure will advance the price to profit first therefore for statue metal see  Pliny mixture which be almost forget and consider the charge try likewise the  mixture of tin in large proportion with copper and observe the colour and  beauty it bein polish but chief let proof be make of the incorporate of copper  or brass with glass metal for that be cheap and be like to add a great glory  and shine for bell metal first it be to be know what be the composition which  be now in use second it be probable that it be the dryness of the metal that  do help the clearness of the sound and the moistness that dull it and  therefore the mixture that be probable be steel tin glass metal for string  metal or trumpet metal it be the same reason save that glass metal may not be  use because it will make it too brittle and trial may be make with mixture of  silver it be but a delicacy with iron or brass to make proof of the  incorporation of silver and tin in equal quantity or with two part silver and  one part tin and to observe whether it be of equal beauty and luster with pure  silver and also whether it yield no soiliness more than silver and again  whether it will endure the ordinary fire which belong to chafe dish Posnets  and such other silver vessel and if it do not endure the fire yet whether by  some mixture of iron it may not be make more fix for if it be in beauty and  all the use aforesaid equal to silver it be a thing of singular profit to the  state and to all particular person to change silver plate or vessel into the  compound stuff be a kind of silver electre and to turn the rest into coin it  may be also question whether the compound stuff will receive gild as well as  silver and with equal luster it be to be note that the common allay of silver  coin be brass which do discolour more and be not so neat as tin the drown of  metal within other metal in such sort as they can never rise again be a thing  of great profit for if a quantity of silver can be so bury in gold as it will  never be reduce again neither by fire nor part water nor otherways and also  that it serve all use as well as pure gold it be in effect all one as if so  much silver be turn into gold only the weight will discover it but that take  off but half of the profit for gold be not full double weight to silver but  gold be twelve time price to silver the burial must be by one of these two way  either by the smallness of the proportion as perhaps fifty to one which will  be but six penny gain in fifty shilling or it must be help by somewhat which  may fix the silver never to be restore or vapour away when it be incorporate  into such a mass of gold for the less quantity be ever the hard to sever and  for this purpose iron be the like or coppel stuff upon which the fire have no  power of consumption the make of gold seem a thing scarce possible because  gold be the heavy of metal and to add matter be impossible and again to drive  metal into a narrow room than their natural extent bear be a condensation  hardly to be expect but to make silver seem more easy because both quick  silver and lead be weighty than silver so as there needs only fix and not  condense the degree unto this that be already know be infuse of quick silver  in a parchment or otherwise in the amid of melt lead when it cool for this  stupefy the quick silver that it run no more this trial be to be advance three  way first by iterate the melt of the lead to see whether it will not make the  quick silver hard and hard second to put realgar hot into the amid of the  quick silver whereby it may be condense as well from within as without three  to try it in the amid of melt iron or melt steel which be a body more likely  to fix the quick silver than lead it may be also try by incorporate powder of  steel or copple Dust by pounce into the quick silver and so to proceed to the  stupify upon glass four thing will be put in proof the first mean to make the  glass more crystalline the second to make it more strong for fall and for fire  though it come not to the degree to be malleable the three to make it colour  by tincture comparable or exceed precious stone the four to make a compound  body of glass and galletyle that be to have the colour milky like a Chalcedon  be a stuff between a Procelane and a glass for the first it be good first to  know exact the several material whereof the glass in use be make window glass  Normandy and Burgundy alehouse glass English drink glass and then thereupon to  consider what the reason be of the coarseness or clearness and from thence to  rise to a consideration how to make some Additaments to the coarse material to  raise they to the whiteness and crystalline splendour of the fine for the  second we see pebble and some other stone will cut as fine as crystal which if  they will melt may be a mixture for glass and may make it more tough and more  crystalline beside we see metal will vitrify and perhaps some portion of the  glass of metal vitrify mix in the pot of ordinary glass metal will make the  whole mass more tough for the three it be good to have of colour window glass  such as be colour in the pot and not by colour it be to be know of what stuff  galletyle be make and how the colour in it be vary and thereupon to consider  how to make the mixture of glass metal and they whereof I have see the example  inquire what be the stone that do easy melt of they take half a pound and of  iron a pound and a half and a ounce of brimstone and see whether they will  incorporate be whole with a strong fire if not try the same quantity calcine  and if they will incorporate make a plate of they and burnish it as they do  iron take a pound and a half of brass and half a pound of iron two ounce of  the calaminar stone a ounce and a half of brimstone a ounce of lead calcine  they and see what body they make and if they incorporate make a plate of it  burnish take of copper a ounce and a half of tin a ounce and melt they  together and make a plate of they burnish take of copper a ounce and a half of  tin a ounce of glass metal half a ounce stir they well in the boil and if they  incorporate make a plate of they burnish take of copper a pound and a half tin  four ounce brass two ounce make a plate of they burnish take of silver two  ounce tin half a ounce make a little Say-Cup of it and burnish it to inquire  of the Materals of every of the kind of glass coarse and fine and of the  proportion take a equal quantity of glass metal of stone calcine and bring a  pattern take a ounce of vitrify metal and a pound of ordinary glass metal and  see whether they will incorporate and bring a pattern bring example of all  colour glass and learn the ingredient whereby they be colour inquire of the  substance of galletyle