476
ANALYTICAL CHEMISTRY
mark's micromuffle ( 8 ) is heated by means of small Nichrome wire, and temperature regulation is by means of a variable autotransformer. Two samples can be burned a t one time; the tubes are stationary and the furnace is moved. There is one rate of travel, 2.5 em. per 10 minutes. The micromuffle described here can be assembled with a minimum of labor, using parts available from certain scientific laboratory apparatus companies.
mercuw container. C. Near the tous of A and B, cauillarv side arms lead to a distributor bead D 20 which the Ohroimatograph tube is connected by a ball ioidt. Small funnels are joined throueh nressure stoncocks to the tons of A and B. The contake< A; which con'tains chloroform; is a straight tube but B, which contains butyl alcohol, is made up of a series of progres-
kith the first elutinr &l
