[ aoi ] 



Of the Proportions in Glauber. 



ifi Experiment. Dr. Black's, ^ Ed. Tranf. io6. 



514 grains of mere foda were faturated by 88180 of the dilute 

 vitriolic acid before mentioned in treating of vitriolated tartarin. 



Application. 



Since 514 grains of mere cauftic foda require 88180 of the 

 dilute acid, 100 grains of foda would require 171 55, and fince 

 1000 grains of this acid contains 7,425 of real acid, 171 55 contains 

 127,37 grains. A refult which differs from mine by lefs than \ of 

 a grain. 



id Experiment, i Klapr. 333. 



100 grains of the thoroughly deficcated foda above mentioned 

 require for their faturation 382 of a dilute vitriolic acid, form- 

 ed of a mixture of i part vitriolic acid, whofe fp. grav. was 1,850 

 and 3 parts water, and the refulting neutral fait weighed 132,5 

 grains. 



He alfo found that 1000 parts newly cryftallized Glauber, dried 

 betwixt filtering paper, afforded by thorough deficcation in a fand- 

 heat only 420 grains, and therefore lofl 580. 



Vol. VII. C c Application. 



