224 C. M. Warren on the Volatile Hydrocarbons. 
worm contained in the “elevated bath, aa, fig. 2,” and also 
that of the “first receiver, k, fig. 2,” # 
ture of the ‘cold bath, w, fig. 2,”" was 11°. The condenser in 
“the refrigerator, B,” and the “second receiver,” were cooled in 
a mixture of ice and salt. With the liquid boiling steadily from 
several points on the bottom of the fl the condensed 
product from the distillation running well from the refrigerator 
into the “second receiver,” not a drop was condensed in any 0 
ature of the laboratory. These obser ne 4 
was boiling at a temperature considerably below that indicated 
by the thermometer in the vapor. Additional evidence of this 
question. 
Experiment 2.—The conditions of this experiment were some- 
what different from those of the first. The liquid operated upon 
was the extremely volatile product collected in the “second re- 
ceiver” of Experiment 1. The flask employed was smaller, and 
provided with two thermometers; the bulb of one of these was 
a rner. ‘l’emperature of the | 
Observa ons during the distillation :— 
__ (Temperature of the water-bath, - - 10° 
eal é 2 oes —. a Beh 
“ 
vapor, 
Temperature of the water bath, - - 12" 
es “boiling liquid, - 9 
ac apo! iat 5 ie 
ges oe vapor, 
2 Temperature of the water-bat - ~ 18 
15 minutes later. oe “ boiling Wala, ‘ 10° 
: Co ee ae 
© Gee Memoll “Un Frcs a Ga sass uc es Emel 
can Academy, 1864, anc eee sitilee =. . 
