42 L. S. ROSS 
with those of the axone. Prentiss (’03) studied the neurofibrillae 
of the leech and crayfish. ‘‘ My preparations of Astacus showed 
no trace of fine fibrillae about the nucleus. . . . The fibril- 
lae appear relatively large and form a few large meshes in 
the peripheral region of the cell.’’ Dahlgren and Kepner (’08) 
refer to the ‘‘implantation cone that reaches far into the cell’ 
in the lobster, and make a general statement with reference to 
this condition in arthropods, but give no detailed description. 
Poluszynski (’11) studied the ganglion cells of Astacus, Squilla, 
and Homarus with the Kopsch and Sjéval methods, using 
Golgi’s arsenious acid technic as a control. In opposition 
to Holmgren he differentiated between the intracellular pro- 
longations of the capsular cells and the ‘Golgi-Kopsch apparatus,’ 
and concluded that in arthropods generally the latter appears 
as a series of isolated threads and granules, and not as a net- 
work. Since his results are based primarily upon the osmic 
acid preparations, it is by no means clear that his internal reticu- 
lar apparatus may not include other constituents of the cyto- 
plasm. 
R. Monti (’14 and 715) has concluded that Poluszynski did 
not see the true form of the Golgi apparatus. She says (transla- 
tion): 
Poluszynski, using the methods of Golgi and Kopsch, did not find 
the reticular apparatus; he observed in the nerve cell only short rods 
sometimes curved or distinct granules scattered throughout the body of 
the nerve cell. He maintains that this formation of granules or short 
rods is homologous with the Golgi reticular apparatus. In support of 
the results of his pupil, Nusbaum concludes that the Golgi appa- 
ratus presents diverse forms, as nets, filaments, bacteriform granules, 
circles, etc. 
In further discussion, she says that— 
When the reaction is good a figure may be recognized that corresponds 
to that given by Poluszynski, but upon following the reaction with the 
greatest care, a figure of extreme fineness is obtained that demonstrates 
the delicate formation of the structure to be comparable with the 
Golgi internal reticular apparatus. 
With a superb technic at her command, Monti studied the 
mitochondria and Golgi apparatus in ganglion cells of Astacus 
