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Receipts for making Aurum Mofaicum without^ Mer^ 
cury. 
ifl. Take 5 ^ of granulated tin fifted through a 
fine fieve, and mix it well with ^ 6 of fulphur, and 
J 4 of fal ammoniac; put the mixture into a matrafs 
or body, and calcine it for fix or feven hours. The 
Aurum mofaicum hereby obtained is not of fo bright 
a colour, as that made in the ufual manner ; and 
that, on account of the tin not being fufficiently divi- 
ded in order to unite well with the fulphur. 
2d. Take ^ 8 of tin reduced to a calx by calcina- 
tion, and mix it well with 5 7 of fulphur, and § 4 
of fal ammoniac ; calcine it as the former. This 
makes a good coloured Aurum mofaicum,, though 
it be found here and there of an unequal colour, 
owing to fome of the tin, which had been too much 
calcined, and thereby prevented from uniting with 
the fulphur. 
3d. Take ^ 8 of tin, and faturate it by fufion with 
fulphur, powder and mix it well with ^ 5 of fulphur, 
and § 4 of fal ammoniac; calcine the mixture as be- 
fore. This produces a good coloured Aurum mofai- 
cum. 
Receipts for preparing Aurum Mofaicum^ without Mer^ 
cury or Sal ammoniac, 
ifi:. Take § 8 of tin, faturate it by fufion with 
fulphur, and mix it with ^ 4 more of fulphur, and 
calcine as before, but with a lefs degree of fire. 
This lorms rather a dark coloured Aurum mofair 
cum, owing to the fulphur wh'di melts, and in great 
meafur e 
