( 718 ) 
The symptoms described in the foregoing, may be observed invall 
cases, provided the operations of the vertebral column and of the 
medulla are made with the necessary precautions. It result that, to 
all appearance, in mammals too, every single segment of the medulla, 
at any rate in the thoracal and upper lumbar region, is capable of 
performing the reflexive function separately and independent from 
the remainder of the central nerve-system. 
Chemistry. — “On the three isomeric fluorobenzenes and some of 
their derivatives.’ By Prof. A. F. HorreMaN and J. M. SLor- 
HOUWER. 
(Communicated in the meeting of October 29, 1910). 
This communication will not appear in these Proceedings. 
(January 26, 1911). 
