Scientific Intelligence. 

 assium, sulphuric acid, sodic phospha 



OH 



OH 







.NOg 



a . a . e . Ne„ 



a. a. CI 



• a 



a . e . X< 



'\^-ri-g| "^ 



a . a . CI 



Pt2 a'. 



a . O . X< 



a. a. CI 





a . O . X+ 





a. a. CI 



a. 



a . O . X+ 



OH ' ' 



OH 



O 



■ '^^2 



The analogy between these 



compounds 



and those of h.. 



cobalt will be at once evident. 









In conclusion, the author gives the foil 



owing ^ 



riow of tl, 











(1) Compounds of diatomic platinum, 

 ^^I'tu HO.Pta.a.OH ¥tl 



, a . OH 

 a. OH 



(2) Compounds of tetratomic platinum, 



HO jj a . OH HO 5^ 



HO *^* a . OH HO Pt a . . OH 



(3) Compounds of hexatomic platinum, 



In these compounds ethylamine, aniline, and dou1.tl(.-> "':■ 

 iranic alkaloids may replace ammonia to a greater oi* 1< ~- ' 

 —Beriehte d^r Deutschen Chem. GeseUschaft, iv J<iJ,i-<i<n.: 

 (From a letter of C. W. Blomstrand.) \^ • 



2. On the preparation of hydric phosphide for ict-ri -V^ 

 ments. — A. W. Hofma^^n has given a simple and elcirant ih' '■ 

 of preparing pure hydric phosphide by means of io-lidi' ot y\ 

 phonium, PH^I, which is itself easily prepared by the foll-^^^ 

 process due to Baeyer, Dry carbonic disulphide is iiitroil"' 

 into a tubulated retort, 100 gr. of phosphorus dissolved i» i^-; 

 then 175 gr. iodine added in small portions at a time. Tluyh 

 phide is then to be distilled off and the last traces removed '> 

 current of dry carbonic dioxide, the retort behig gently warni 

 After cooling, the condenser is to be removed from the retort £ 



