ON TE NAUK (OF. THE PERICELLULAR NET- 
WORK OF INERV EE (CELAS: 
By SHINKISHI HATAI. 
(from the Neurological Laboratory of the University of Chicago.) 
With Plate III. 
In 1895 HeELp announced that the nerve cells in the cen- 
tral system are densely surrounded by the terminals of the 
axones which divide into fine branches and form by a local 
union a complicated network. He also described the club- 
shaped enlargement of the axone terminals which may be seen 
in the embryonic nervous system. These terminals, or ‘‘Axen- 
cylinderendflache,’’ are characterized by the presence of the 
minute granules or neurosomes which stain red by erythrosin. 
The terminal network or ‘‘Pericellular network,’”’ or ‘‘Gotuer- 
netz of BETHE” is very well shown by BeruHe’s molybdenum 
technique, as well as by Gorai’s modified silver technique. 
The appearances produced by the. foregoing methods are 
somewhat different from those obtained by the method of 
Hep. This difference in appearance may be due to the fact 
that both Gouer’s and Brrue’s technique cover over the finer 
and more complicated structures by the precipitation of silver 
chromate or the molybdenum compound respectively, and thus 
bring out strongly marked and rather angular meshes of the 
network. The nature of these networks obtained by HE Lp, 
Gore! and Berue will "be described later on. 
I have also noticed and described this pericellular network 
which not only surrounds the PuRKINJE cells and the cells in 
the corpus trapezoideum, but also the cells in the Ammon’s 
horn and those in the ventral cornua of the spinal cord (03). 
HeELp’s idea that the finer network which surrounds the 
