CONTENTS, 
CONTRIBUTED ARTICLES. 
The Neurofibrillar Structures in the Ganglia of the Leech 
and Crayfish with Especial Reference to the Neurone 
Theory. By C. W. Prentiss. Parker Fellow in 
Zoilogy, Harvard University. With Plates V and VI 
On the Increase in the Number of Medullated Nerve Fibers 
in the Ventral Roots of the Spinal Nerves of the 
Growing White Rat. By SuinxisHi Hata. (from 
the Neurological Laboratory of the Untversity of Chicago) 
On the Medullated Nerve Fibers Crossing the Site of Le- 
sions in the Brain of the White Rat. By S. WALTER 
Ranson, Jnstructor in Anatomy, Marion-Sims-Beau- 
mont Medical School, St. Louis University. (From the 
Neurological Laboratory of the University of Chicago. 
With Plate VII : k 
On the Density of the Cutaneous Innervation in Man. By 
CHARLES E, IncBert. (From the Neurological Labor- 
atory of the University of Chicago.) 
Ona Law Determining the Number of Medullated Nerve 
Fibers Innervating the Thigh, Shank and Foot of the 
Frog—Rana virescens. By Henry H. DoNALpson. 
(From the Neurological Laboratory of the University of 
Chicago.) ‘ ‘ é d ‘ : ; 
157 
177 
185, 
209 
223 
