238 COMPOSITION AND PRODUCTS OF 



Out of this the following formula is calculated : 



In 100 parts. 



Atoms. Atomic weight. Calculated. Found. 



32 Carbon 194.18 53.16 53.00 



31 Hydrogen 31.00 8.48 8.47 



3 Oxygen 24.00 6.57 6.83 



1 Oxide of silver 116.13 31.79 31.70 



365.31 100.00 100.00* 



The anhydrous acid is constituted as follows : 



Atoms. Atomic weight. In 100 parts. 



32 Carbon 194.18 77.92 



31 Hydrogen 31.00 12.44 



3 Oxygen 24.00 9.64 



249.18 100.00 



The atomic weight of this acid, found by burning the silver 

 salt, was 250.24. The acid not in combination with a base, 

 contains one atom of water, and has for its composition : 



In 100 parts. 



Atoms. Atomic weight. Calculated. Found. 



32 Carbon 194.18 75.21 75.13 



32 Hydrogen 32.00 12.39 12.51 



4 Oxygen 32.00 12.40 12.36 



258.18 100.00 100.00 



After the results afforded by these analyses it is impossible 

 to confound this acid with margaric acid, and particularly too 

 as its composition agrees with that of another acid, described 

 by Dumas and Stass under the name of athalic acid, and which 

 they obtained by acting upon athal with potash at a temperature 

 of from 390° to 410° Fah. The acid then which has just been 

 described, and which was obtained from the saponification 

 of spermaceti, is athalic acid. 



The athal that Chevreul mentions as being the base of sper- 

 maceti, and related to it as glycerine is to the other fats, was 

 found to be of the same nature that he describes it to be. 



Atoms. In 100 parts. 



» Margarate of silver, 34 Carbon 206.31 54.57 



33 Hydrogen 33.00 8.65 



3 Oxygen 24.00 6.30 



1 Oxide of silver 116.13 30.48 



379.44 100.00 



