Analyfts of the Atr. 189 
proportion of calx, that the worthy Dr. Stare 
found remaining, after the diftilling and 
calcining two ounces of r^/r«/«J,^^one ounce, 
and three drams of which (he fays) cva- 
porated in the open fire ( a material cir- 
cumftance, which the Chymifts rarely en- 
quire after) of which we have no ac- 
count.*' Thilof Tranfa£t. Lowthorp's A- 
bridgment. Vol. III. p, 179- The greatcft 
part of which was, we fee by the prefent 
Experiment, raifed into permanently claf- 
tick Air. 
By comparing this diftillation of the cal- 
culus with that of Rentjh Tartar in Exper. 
73. we fee that they both afford more Air 
in diftillation, than any other fubftances : 
And it is remarkable, that a greater propor- 
tion of this new raifed Air from thefe two 
fubftances, is reforbed and lofes its elafti- 
city, in ftanding a few days, than that of any 
other bodies, which are ftrong fymptoms 
that the calculus is a true animal Tartar, 
And as there was very confiderably lefs oil, 
in the diftillation of Renifh Tartar^thzn there 
was in the diftillation of the Seeds and folid 
parts of vegetables 5 fo I found that this 
calculus contained much lefs oil than the 
blood or folid parts of animals. I 
