384 Scientific Intelligence. 
is passed over it. The temperature rises to 180°, and then phenol 
begins to distil over. The process is finished when the tempera- 
ture has reached 220° to 250 
contents of the retort when cool are dissolved in water, acidified 
phenylates; but the very curious result was observed by Kolbe 
that potassium phenylate gave paraoxybenzoic acid when thus 
€ apparently to the temperature.—J. pr. Ch., I, x, 
89, July, 1874. G. F. 
_ 4. Vanilline.—At a meeting of the Paris Academy of Sciences 
held Sept. 14, Dr. W. A. Ho 
rom his measures, the coefficient of dilatation for 1° between 
Thus, not only has hard rubber a very great coeflicient of dilata- 
tion, but the latter increases very rapidly with the temperature. 
whose changes will be the opposite of thos z 
mometer, and which will fall with an increase of temperature.— 
Univ., excix, 311 gg. Ann., exlix, E. © 
6. Air sure required to sound vario Instruments 
maximum when a small tube was inne 
the lips were supported by a cappee 
t ts,a much greater pressure could 
en 
as in brass ins 
