i ee 
that 52 grs. of the pure alkali took up 53 of the ftrongett vitri- 
olic acid, and the refulting falt weighed 105 grs. From the 
known accuracy of this excellent chemift it muft be prefumed 
that fome circumftance occurred fimilar to that which occafioned 
an increafe of weight in my experiment. 
Of Nitre. 
I Took 360 grains of the fame alkaline folution, and diluted 
it {till further by the addition of 622 of water, the whole con- 
taining as before 120 2rs. of mild vegetable alkali. This I fatu- 
rated with fpirit of mitre whofe fpecific gravity was 1,1316, and 
for that purpofe 436 grs. were required. ‘This acid contains by 
my table 23,9 grs. ftandard nearly ; then the quantity employed 
contained 104. The lofs of air was 34 grs.; and hence the 
quantity of pure alkali was 86 grs. After the folution had ftood 
fourteen hours I found its fpecific gravity, temperature 58°, to 
be 1,099. The whole weight was 1384 gers. 
I THEN took 720 grs. of diftilled water, and gradually adding 
cryftallized nitre finely pulverized and dried by long expofure 
to the air, I found that when 112 grs. of it were diffolved the 
fpecific gravity of the folution was 1,099 in the fame tempera- 
ture as above, therefore the proportion of nitre was the fame in 
both, that is —-— part of each. Now 1384 = 186,32, this then 
71428 754.28 
was the quantity of regenerated nitre. 
In 
