Technical Chemistry. 275 
Tecuntcal Cuemtstry.— 
11. On a Safety-lamp for laboratory use; by C. M. Warren.—The 
especiall 
tional distillation of complex mixtures of inflammable substances, as his 
5 means by which to effect a separation. 
a Gaskochlampen” in J. F. Luhme & Co.'s, Berlin, catalogue of chemical 
re 
a n to receive the movable brass 
n: % which serve to hold firmly 
tubulure, 4,—which may be 
with a cork—serves for the in- 
n of a match for lighting. 
ommunicates in the in- foe placed 
and provided 
ha ring, 24 inches in diameter, made of copper tube, 
* centre of the lamp, 3} inches below the upper gauze, @ 
