ZH The Hiflory of 



1003 Mineral cinnabar in grains. 



1003 Speife from lead- work. 



1004 Drufiform lead-glitter. 



1005 Diced lead-glitter. 



1006 Factitious cinnabar. 



1007 Iron. 



1009 Silver-litharge. 



1 01 3 Speife, of four parts zink, and one part 



. copper. 

 1022 Brafs. 

 J022 Malleable prince's metal, of copper and 



cadmia fornacum. 

 1026 Silver alloyed fix parts. 



1028 Copper. 



1029 Bifmuth. 

 1046 Silver. 

 1058 Villach lead. 

 1073 Quickfilver. 

 1098 Gold. 



Remarks on the H y d r o s tat i c a l Balance, 

 and its ufe. 



I. For a balance to be fenfible and accurate, 

 that is, conftantly to mew, in an uniform manner, 

 the fame degrees, the ftem muft be hollow and 

 open a-top, for the air in the body below to have 

 a conftant free communication with the external 

 air. 



II. Confequently, fuch are unfit whofe ftems are 

 either not hollow, or yet are clofe a-top ; as the 

 common glafs and amber fort. 



III. The longer the item, the better ; as then 

 the greater number of degrees may be marked 

 thereon, and the more different bodies it can bear, 

 without finking down. 



IV. The 



