315 



which is that of Lutidiiie, a base which has, as yet, only been twice 

 observed before, it having been discovered in Dippel's animal oil by 

 Dr Anderson, and found soon after in Shale Naphtha by the author 

 of the present paper. Pyridine and picoline were also found by 

 fractionally crystallizing the platinum salts obtained about this point 

 in the earlier distillations, but the quantity present was extremely 

 small. 



Fraction boiling between 350° and 360° F. This fraction was 

 found to consist of coUidine, a platinum salt giving on combustion 

 numbers agreeing closely with the theoretical values. Collidine was 

 also found in fractions boiling as high as 380° to 390°. 



Fraction boiling between 410° and 420° F. Five analyses of 

 platinum salts obtained at this point indicated the base present to 

 possess the formula, 



CIS H7 N, 



being the chinoline of Gerhardt. The author proposes in a future 

 paper to compare Chinoline with the Leukoline of Hofmann, with a 

 view of determining the question of their being identical, or merely 

 isomeric. Chinoline forms by far the greater portion of the basic 

 liquid. 



Fraction boiling between 510° and 520° F. This was found to 

 consist of a new base, which the author terms Lepidine, the formula 

 of which, derived from analyses of the double salt with bichloride of 

 platinum, the hydrochlorate, nitrate, bichromate, and also the hy- 

 dtiodate of the amyl compound, is 



C^OH^N, 



the experimental numbers in each case agreeing closely with those 

 required by theory. 



The author states his belief that several bases said to be the sole 

 products of certain reactions, as well as some natural ones, will bo 

 found to be mixtures, and he is now examining nicotine with a 

 view to ascertain whether it is a homogeneous body ; he also gives 

 the results of some experiments proving pyrrol to be produced by de- 

 structive distillation of many nitrogenous bodies, and concludes with 



