( 44 ) 
0,1533 gram yielded 16,2 cc. N 2 at 778 m.m. and 21° • 
Found: 12,26% N 
Calculated for C 8 H 7 N: 11.97 */ 0 N 
With sodium nitrite and sulphuric acid it gives the well-known 
nitroso-indole reaction, and with picrit acid and sulphuric acid the 
picrate, which crystallises from benzene in red needles. 
I | L - C OH 
l J NHo 
Delft , April 1909. 
Chem. Lab. Techn. High School. 
Anatomy. — “On the motor facialis- and abducens-nncleus of 
Lophius piscatorius.” By Mr. A. B. Droogleever Fortuyn. 
(Communicated by Prof. L. Bole). Communication from the 
Central Institute for Brain Research at Amsterdam. 
(Communicated in the meeting of March 27, 1909). 
When we study a series of transverse sections through the cerebrum 
of Lophius piscatorius, it is striking how here, in distinction from 
so many other fishes, the nucleus of the motor facialis lies partly 
dorsally, i. e. against the fourth ventricle, partly ventrally against the 
circumference of the medulla oblongata. Fig. 1 clearly shows this 
situation (d. fac. nu. and v. fac. nu.). For in other fishes, e. g. Gadus, 
we find the entire nucleus lying pretty near the ventricle, or we 
see, as in Tinea, that a few ceils of this nucleus are displaced a 
little more ventrally, not so far, however, as to reach the circum¬ 
ference of the medulla oblongata. Fig. 2 is a transverse section of 
the most ventral part of the facialis-nucleus of Gadus, whilst Fig. 3 
shows the facialis-nucleus of Tinea. 
Now Dr. Ariens Kapfers, in a number of cases, has proved that 
such nuclear displacements, whether they come about in the course 
of the evolution, or, as with Lophius, are exceptional cases, always 
take place in the direction and under the influence of those tracks 
aiong which the most powerful and the greatest number of stim u 
are conveyed to this nucleus. Kappers called this phenomenon o 
nuclear displacement neurobiotaxis. 
