Cl208] 
Frederici Hoftmanni Fred, Fil.M. J). Exercitatio 
Medico Chymka de Cinnabari Antimonii. 
, Xugd. Batavorum i^Sj- S'^V 
THE Author of this Treatife deiigning to give an 
exa£t procefs oi the Cinnabar of Antimony ^ and 
examine its Confticuent principles 5 to Solve allPhseno- 
mena that occur in its preparation,- to explain the 
Mode of its operation, and defcribe its Virtues; be- 
gins firftwitli its two Ingredients Antimony y and Sub* 
limate I and confiders their principles in drftincfl 
Chapters; makes Experiment in what proportion ^«/^j", 
and Mercury are Containd 'm Sublimate ; gives you cau^ 
tion how to choofe the Sublimate^ and gives account 
what happened remarkable from diftilling Cinnabar of 
Antimony with Sublimate adulterated with Arfenich^ 
Treating next of the Butter of Antimony^ he exa- 
mines its two Principles, the one ^S'^Z/w^ and fluid, theo^- 
ther /^/'m 6c dry, which he calls Mercurius Vitee; & here a- 
gain he makes tryall in what proportion each Ingre- 
dient is included in this Compofition j heinfiftsmuch 
upon the Management of the fire, andVeffels in this 
preparation; and fliews away how to prepare Butter 
Antimony without fire* 
And here he takes notice of that odd Phasnomenon > 
why Butter of Antimony makes iuch an effervefcence 
with Spirit of "Niter only, and with no other Corrofive- 
Menjiruum befides; which he Solves by fuppofing that 
the Spirit of Niter ^ by its mixing with the Salts in. 
the Sublimate^ becomes an Aqua ^gis^ which works- 
Bpon the Included Antimonial particles, juftas that Cor- 
fofive Menjiruum is obferv'd to work upon the powder 
of Antimony. 
Com- 
