[ 124 ] 
the fait of tin, which for the moft part came over 
congealed. 
5th. Take § 10 of fulphurated tin, powder and 
mix it well with ^ 16 of corrofive mercury fubli- 
mate ; put it into a retort, to which an adopter and 
receiver is to be luted, calcine It for fix hours, at firft 
with a middling fire, and for the lafi; three hours the 
retort mu ft be red hot. 
In this operation, a portion of the tin unites with 
the acid of the mercury fublimate; and forms the 
fmoaking liquor of Libavlus, which diftills for the 
moft part in a liquid form ; 'the mercury contained 
in the mercury fublimate unites with a fmall portion 
of fulphur (about 4 of its weight), and fublimes in 
form of cinnabar in the top of the retort ; the re- 
maining tin, having a fufliciency of fulphur, forms 
the Aurum mofaicum, which is found at the bot- 
tom of the retort of a moft beautiful fparkling golden 
colour. 
The reafon for obtaining Aurum mofaicum by this 
operation is, that the greateft part of the tin unites 
with the acid of the mercury fublimate, and rifes 
in diftillation ; the remaining tin has thereby a fuf- 
ficient quantity of fulphur to form the Aurum mo- 
faicum. 
Some of the foregoing receipts did not well fuc- 
ceed at the firft or fecond trial 5 and many other 
experiments, which did not anfwer, have here been 
omitted. 
From the foregoing experiments, we may certain- 
ly conclude, that Aurum mofaicum is a combination 
of tin and fulphur j it contains better than 4 of 
fulphur. It alfo appears that the only ule of the 
mercury. 
