188 Mr. Stenhouse's Chemical Examination of 



Combustion with oxide of copper gave the following results : 



I. 0'3205 salt gave 0*62 1 carbonic acid and 0*249 water. 



II. 0-3305 „ „ 0-6393 „ „ 0-257 „ 



III. 0-2885 „ „ 0-559 „ „ 0-222 „ 



I. II. III. 



Carbon 53-57 53-50 53-58 



Hydrogen 8-63 8-64 8-54' 



Oxygen 6-35 6-41 643 



Oxide of silver... 31-45 31-45 31-45 



100-00 10000 100-00 



The analyses of the hydrate agi-ee best with the following 

 formula : 



Per cent. 



66 atoms of Carbon 5044 75-67 



128 „ Hydrogen .. 824 12-33 



8 „ Oxygen 800 12-00 



6668 100-00 



From the determination of the quantity of oxide of silver in 

 the silver salt, however, I am disposed to prefer Mr. Fremy's 

 formula for the hydrate as the more probable. It is 



Per cent. 



32 atoms of Carbon 2446 75-37 



64 „ Hydrogen... 399 12-40 



4 „ Oxygen 400 12-23 



3245 100-00 

 The formula C.j Hgj 0.--I- Ag O gives the following num- 

 bers for the silver salt : Per cent. 



32 atoms of Carbon 2446 53-35 



62 „ Hydrogen 387 S-44 



3 „ Oxygen 300 6-54 



1 „ Oxide of silver 1452 31*67 



4585 100-00 



The hypothetical composition of the anhydrous acid is con- 

 sequently as follows : 



Per cent. 



32 atoms of Carbon 2446 78-08 



62 „ Hydrogen.. 387 12-35 



3 „ Oxygen.... 300 9-57 



3133 100-00 



Tlie number 3133 agrees very nearly with the mean of 

 five determinations of the silver salt, which gave 3165 for the 



