458 Messrs. A. Matthiessen and C. K. A. Wright on the [June 10, 



This substance was free from chlorine, as shown by its giving no preci- 

 pitate with nitrate of silver after heating with nitric acid. 



It hence appears that the new base is simply formed from morphia by 

 the abstraction of the elements of water. 



Morphia. JNew base. 



C 17 H 19 N0 3 =H 2 + C 17 H 17 N0 2 , 



the reaction under the influence of hydrochloric acid being perfectly analo- 

 gous to that by which kreatine, under the influence of strong acid, splits 

 up into water and kreatinine. 



Kreatine. Kreatinine-. 



C 4 H 9 N 3 2 =H 2 + C 4 H 7 N 3 0. 



We propose to call the new base apomorphia, for reasons given subse- 

 quently. 



When the hydrochlorate of apomorphia in a moist state is exposed to 

 the air for some time, or if the dry salt is heated, it turns green, probably 

 from oxidation, as the change of colour is accompanied by an increase of 

 weight. The base itself, newly precipitated, is white, but it speedily turns 

 green on exposure to air. The green mass is partly soluble in water, com- 

 municating to it a fine emerald colour — in alcohol yielding also a green, 

 in ether and benzole giving a magnificent rose-purple, and in chloroform 

 producing a fine violet tint. 



The following Tables show the most marked properties and reactions of 

 apomorphia as contrasted with morphia. 





Water. 



Alcohol. 



Ether. - 



Chloroform. 



Morphia ...... 



Almost insolu- 

 ble. 



Sparingly so- 

 luble cold, 

 more soluble 

 boiling. 



Almost insolu- 

 ble. 



Almost insolu- 

 ble. 



Apomorphia . . . 



Slightly solu- 

 ble, especially 

 if charged 

 with carbonic 

 acid. 



Soluble. 



Soluble. 



Soluble. 



The following comparative reactions were made with solutions contain- 

 ing each 1 per cent, of the hydrochlorate of the base : — 



