VoLuME XI I9o1 NUMBER 4 
THE 
JournaL oF Comparative Neuvurotocy. 
ON THE MITOSIS IN THE NERVE CELLS OF THE 
CEREBELLAR CORTEX OF FOETAL CATS.! 
By SHINKISHI Hatar. 
(From the Neurological Laboratory of the University of Chicago.) 
With Plate XVIII. 
I. Lntroduction. 
Il. Materials used and technique employed for the present investigation. 
III. Germinal cells or ‘*Keimszellen.” 
Germinal cells in the prophase. 
Germinal cells in the metaphase. 
Germinal cells in the anaphase. 
Seo es 
Germinal cells in the telophase. 
IV. Comparison with results of other tnvestigators. 
V. Morphology of the nucleolus. 
VI. Critique of the observations of previous authors on the nucleolus. 
VII. Summary. 
VIII. JLilustrations. 
I. Introduction. 
In the immature and growing mammalian nervous system, 
mitoses are very widely distributed. Mitotic changes in the 
cells of the central nervous system also occur in mature mam- 
mals under pathological conditions resulting from intoxication 
and mechanical lesions. FFRIEDMAN,? Marinesco* and TEDES- 
1 This work was begun at the Biological Laboratory of the University of 
Cincinnati and finished in the Neurological Laboratory of the University of 
Chicago. 
2 FRIEDMAN: Arch, f. Psychiatrie, Bd. XIX, ’88; Bd. XXI, ’89. 
3 MARINESCO; Semaine Med. ’g4, n. 29. 
