The Neurokeratin in the Medul- 
lary Sheaths of the Peripheral 
Nerves of Mammals, 
By SHINKISHI HATAI, 
With One Plate. 
(From the Neurological Laboratory of the University of 
Chicago.) 
{Reprinted from THE JOURNAL OF COMPARATIVE 
NEvUROLOGY, Vol. XIII, No. 2, 1903.] 
