464 Mr, ALcuorne’s Experiments a 
ceived, @ priori, from the different texture of the two metala | 4 
In confirmation of which, I beg leave to lay fome of the ex- _ 
periments before you. 
EXPERIMENT 1. 
Sixty Troy grains of pure tin were ftirredinto twelve ounces 
of refined gold, in fufion; and the mixture was then caft into 
a mould of fand, producing a flat bar, one inch wide, and one- 
eighth of an inch thick. The bar appeared found and good, 
fuffered flatting under the hammer, drawing {everal times be- 
tween a large pair of fteel rollers, and cutting into circular 
pieces, of near an inch diameter, which bore ftamping in the 
money-prefs, by the ufual ftroke, without fhewing the leaft 
fign of brittlenefs; or rather with much the fame dudtility as 
pure gold. 
© Slee Bei ME. Nee eb. 
Ninety grains of like tin were added to twelve ounces of 
fine gold, ftirred, and caft as above. The bar produced was 
{carcely diftinguifhable from the former, and bore all the ope-- 
rations, as before-mentioned, quite as well 
EXPERIMENT iii. 
One hundred and twenty grains of fine tin were mixed with 
twelve ounces of fine gold, and being caft like the foregoing, 
produced a bar rather paler and harder than the preceding, 
but which fuffered the like operations very well; except that, 
on drawing between rollers, the outer edges were difpofed to 
crack a little, 
E X P E-~ 


