406 Scientific Intelligence. 
of this base. Picoline from animal oil, boiling between 134° and 
139° and hence a mixture of a-methvl-pyridine with some f-methyl- 
ridine, was treated as above, distilled, saturated with HCl and 
evaporated to dryness. The residue was converted into the 
‘nitroso-compound, extracted with ether and decomposed with 
HCl. The hydrochlorate, distilled with , and purified, 
gave a colorless oil boiling at 121-124°, consisting essentially of 
a-methyl-piperidine C,H,(CH,)NH isomeric with the methyl- 
piperidine prepared by Hofmann C,H,.NCH,. The author has 
also prepared ethyl piperidine from y-ethyl-pyridine by the same 
reaction.—Ber. Berl. Chem Ges., xvii, 388, March, 1884. 
ma 
air is drawn through this tube into the exhaust. A graduation 
permits the difference of level of the mercury in the two tubes 
and B to be read ‘off, and thus the pressure under which the 
distillation is effected, to be determined.—Ann. Chim. Phys. Vi, _ 
: ak. | 
