420 Mr. Tilley on some of the Products of 



2nd. 0*8785 gave 1*1300 carbonic acid, and 0*4505 water. 



This gives in 1 00 parts, 



1st. 2nd. 



Carbon 35*20 35*56 



Hydrogen 5*55 5"68 



Oxygen 1027 978 



Oxide of silver. . 48*89 48*98 



100 100 



and leads to the following theoretical composition : 



Per cent. 



14 atoms Carbon 1070*090 35*86 



13 „ Hydrogen 162*233 5*43 



3 „ Oxygen 300-000 10*07 



1 ,, Oxide of silver. 1451*61 48*64 



Atomic weight... 2983*384 100*00 



The formula for this salt is then C'^ H'^ O^ + Ag O. 



(Enanthylate of Baryta, — This salt is formed by boiling 

 carbonate of baryta with an alcoholic solution of oenanthylic 

 acid till the fluid no longer possesses acid reaction. The so- 

 lution must be filtered while hot, and on cooling deposits the 

 salt in beautiful pearly scales, which are insoluble in aether, 

 but soluble in water and alcohol. 



0*3520 of this salt gave 0-1735 carbonate of baryta, or 

 0*1346 baryta, the atomic weight of the acid, calculated from 

 this, being 1545*54. It gives in 100 parts, 



38*23 oxide of barium 



61*77 oenanthylic acid 



100*00 

 1st. 0-4395 of the same salt, burned with oxide of copper, 

 gave 06645 cai'bonic acid, and 0*2740 water. 



2nd. 0*3460 salt gave 0*5200 carbonic acid, and 2190 

 water. 



After adding to the carbon that which remained, combined 

 as carbonic acid, with the baryta in the combustion tube, we 

 obtain in 100 parts, 



Carbon 44*84 44*58 



Hydrogen 6*91 6-87 



Oxygen 10*02 10*32 



Baryta 38*23 38*23 



100*00 100*00 



