238 M. EUHARA 



precipitated. The hitter was then changed into an hydrochloride, 

 and consequently into a double salt, with mercuric chloride. The 

 double salt thus prepared was found to be identical with the double 

 salt of the original base, agreeing- in its crystalline form, melting 

 point, and analytical results. The double salt, dried over calcium 

 chloride, was analysed, and the results were as follow : 



I. 0.2396 gram the double sail gave 0.2353 gram AgCl. 



II. 0.2000 „ ., „ „ „ 0.1958 „ 



III. 0.3165 ., „ „ „ „ 0.2037 „ llgS. 



IV. 0.3378 ,. „ ., ., „ 0.2200 „ 



Found. 



Calculated us 



I. IT. III. IV. S U !; ,\ .HC1.2HgCl,H H.,0. 



Chlorine 24.30 21.22 24.66 



Mercury — 55.-17 55.50 55.59 



It is evident, therefore, that a greater part of the base changed 

 into anitrosamine, and the oil separated from the solution with caustic 

 potash was simply the base unchanged. 



According to the results of analysis thus far, il is highly probable 

 that the author's base has the formula C S H 13 N and differs in many 

 respects from the base isolated by Durkopf,* although thev are 

 isomeric. 



The Oxidation and Decomposition of the Base. 



'. )n heating 10 grams of the base freshly distilled, with the 

 chromic acid mixture consisting 1 of 20 grams of potassium bichromate 

 and 20 grams of sulphuric acid diluted with its own volume of water, 

 the mixture gradually became green with the evolution of OIL The 



* Durkopf's base is stated to change into collicline on treating it with KN0 2 . — Ber. d. cleut. 

 dum. Gesel. 14,271 :v 



