1864.] 'Mv,Wi\\mm&--'Researches on Isomeric Alkaloids, 309 



3. That a salt containing a highly soluble compound with one equivalent 

 of hydrochloric acid and two of chlorine, may, by loss of hydrochloric acid, 

 become converted into an insoluble bihydrochlorate. 



The author states his intention of studying more in detail the substances 

 produced by the union of the primary and tertiary monamines with the 

 chloride and dichloride of platinum, espcially with the view of determining 

 the amount of replaceable hydrogen in them. 



Comparative Experiments on the Action of Protochloride of Platinum on 

 13-Luiidine and Lutidine. 



I. 15-Lutidine. — Equal weights of protochloride and base were mixed in 

 an apparatus surrounded with a non-conducting medium. The tempera- 

 ture rose from 1 6° to 84°, only one gramme of each ingredient being em- 

 ployed. The hard brittle product gave on analysis numbers almost exactly 

 agreeing with the formula 



According to Gerhardt's views the formula being doubled becomes the 

 chloroplatinate of di-platoso-/3-lutidine, and may be written thus 

 PtCPH(C^*H^'Pt)N^ 



M. Hugo Schiff has recently presented to the Academy of Sciences* a 

 paper in which he states that chinoline combines with numerous metallic 

 chlorides to form compounds having the general formula 



X representing an acid radical. 



It is evident that this formula satisfies the condition of the compound 

 above described containing /3-lutidine. Representing the chlorine by X 

 and the platinum by M, we have 



But all these bodies are precisely analogous to the compound of chinoline 

 with protochloride of platinum obtained by the author in the course of his 

 researches on that basef . 



II. Lutidine. "When lutidine was treated with protochloride of platinum 

 under exactly the same conditions, the temperature rose two degrees higher. 

 The difference was therefore too small to found any conclusion upon. But 

 the product, instead of becoming a hard brittle mass, remained of the con- 

 sistence of treacle. 



Comparative Examination of the Palladium Salts of ji-Lutidine and 



Lutidine, 



I. (^-Lutidine. — A mixture of known quantities of base, hydrochloric acid, 

 and chloride of palladium was made and put aside. In four days the 

 whole was a nearly solid mass of garnet-red prisms. Collected and dried, 



* Comptes Rendus, Ivii. p. 837. f Chemical Gazette, September 15, 1858. 



2 a2 



