1V CONTENTS 
No. 5. DECEMBER 
Hatsert L. Dunn. The growth of the central nervous system in the human fetus as 
expressed by graphic analysis and empirical formulae. Thirty-eight figures...... 405 
S. R. DerwiterR anp Henry Laurens. Studies on the retina. Histogenesis of the 
visual cells. in Amblystoma, - (hirteen fieures! 2.5.7 .% 20s. os = + ee see ee 493 
O. LarseLL AnD M. L. Mason. Experimental degeneration of the vagus nerve and its 
relation to the nerve terminations in the lung of the rabbit. Five figures.......... 509 
