174- ANIMAL AMIDES. 



that it amounted to 20 atoms. He represents its constitution by 



the formula C 80 H 64 Az 10 O 26 + SO 3 . Calculating from it we 

 get, 



80 carbon, f :.,&i = 60 or per cent. 51-51 



64 hydrogen, >- ^ = 8 ... 6-86 



10 azote, m&% = 17-5 ... 15-03 



26 oxygen, ~. = 26 ... 22-31 



1 sulphuric' acid, =5 ... 4-29 



116-5 100, 



Mulder considers the precipitate as composed of 



2 atoms protein, C 80 H 62 Az 10 O 24 



2 atoms water, H 2 O 2 



1 atom sulphuric acid, SO 3 



C 80 H 64 Az 10 O 26 SO 3 



Chloro-U-proteic Add. This acid may be formed in the same 

 way as the last It is composed of 2 atoms protein, 2 atoms 

 water + 1 atom muriatic acid. 



Action of Chlorine on Protein. Mulder has made some expe- 

 riments on the action of chlorine on protein.* When a current 

 of dry chlorine is passed over protein it is absorbed, but the pro- 

 tein is not decomposed. The compound formed is a compound 

 of 1 atom protein and 1 atom of chlorous acid. Hence its for- 

 mula is C 40 H 31 Az 5 O 12 + CIO 3 . This compound is easily 

 washed and obtained in a state of purity. 



To form it albumen was dissolved in water, and the liquid 

 filtered. This solution being treated with chlorine no gas was 

 evolved, but white flocks almost immediately appeared. They 

 increased in number. In a few hours the action was at an end. 

 The precipitate, which smelt of chlorous acid, was collected on a fil- 

 ter and washed. The washing was continued till the water nearly 

 ceased to be acted on by nitrate of silver. But, as the precipitate 

 is not altogether insoluble in water, the process must not be con- 

 tinued too long. The precipitate thus washed was pressed between 

 folds of filtering-paper, and dried at 176. It has a white co- 

 lour with a tint of straw-yellow. It was finally dried at 212. 

 When heated on platinum foil it melted, gave out gas, swelled 

 and burnt all away, without leaving any residue. During its 



* Ann. der Pharm. xxxvi. 68. 



