Y Aqueous Solutions of Acids and Alkalies. 461 



of a test atom of ammonia, according to Dr. Faraday's spe- 

 cific gravity, is 41*5282, according to mine 42*8571 septems. 

 The difference is 1*3289 septems. Hence my assumptions 

 are almost confirmed by Dr. Faraday's experiments. 



Table XVIII. — Sal- Ammoniac. 



IPC1 2 + N 2 H 6 = 667*63 grs. Temperature 62° F. 



[H 2 CI 2 =455*13 + N 2 H 6 =212*5.] 



