[ *32 ] 



would afFord 148,7 (Englifh meafure), thefe at the rate of ^^ per 

 cent, would weigh 49,07 grains, including water loft, which dif- 

 fers but little from my account. 



KiER found 22,5 grains dry nilre were faturated by 12,54 grains 

 ▼itriolic acid, 1,844. Phil. Tranf. by my determination 22,5 grains 

 nitre contain 11,655 grains tartarin (for if 100 grains nitre contain 

 51,8:: 22,5, 11,655) ^^^ ^i>^55 grains tartarin require 9,61 of 

 real vitriolic acid for their faturation. 



Now the fp. grav. 1,844 is intermediate between the tabular 

 gravities 1,8542 and 1,8424, but nearer to the latter; then by the 

 ift problem itu centenary acidity will be found to be 78,58, and 

 if 100 grains of this acid contains 78,58 real acid, 12,54 fliould 

 contain 9,85, the difference is not quite i of a grain. Mr. Kicr re- 

 quired 12,54 of this acid, by my determination 12,23 are fuiRcient, 

 the difference is not ^ of a grain. Phil. Tranf. 



KlapRoth found 200 grains of Leucite, treated with marine 

 acid, to afFord 70 of muriated tartarin ; and that 300 of that flone, 

 treated with nitrous acid, afforded 123 of nitre. Now by Berg- 

 man's calculation 100 grains muriated tartarin contains 61 of al- 

 kali, therefore 70 grains fhould contain 42i7' 



fty my calculation 100 grains muriated tartarin contains 64 of 

 alkali, therefore 70 fhould contain 44,8 of alkali. 



Then 



