CONTENTS 



1916 



No. 1 FEBRUARY 



W. J. Crozier. Regarding the existence of the 'conunon chemical sense' in vertebrates 1 

 William F. Allen. Studies on the spinal cord and inedula of cyclostoraes with special 

 reference to the formation and expansion of the roof plate and the flattening of the 



spinal cord. Eightj'-seven figures 9 



Percival Bailry. Morphology of the roof plate of the foro-hruin and the lateral choroid 

 plexuses in the human embryo. Thirty-one figures 79 



No. 2 APRIJ. 



Leslie B. Arey. The movements in the visual cells and ri'tinal pigment of tlie lower 

 vertebrates. Thirty-seven figures IJl 



11. Saxton Burr. Regeneration in the brain of .\mbIystoma. I. 'I'Im' foro-l)r:iin. Four 

 figures 203 



No. 3 JLXK 



Leslie B. Arey. The function of the efferent fibers of the iii)ti<' nerve of fishes. Twelve 

 figures (two plates) 213 



(!. E. CoGHiLL. Correlated anatomical and physiological studies of the growth of the 

 nervous system of Amphibia. IF The afferent system of the head of Amblystoma. 

 Seventy-nine figures 247 



H. .\. KocuKij. The effect of activity on the histological structure of nerve cells ^ 241 



No. 4 AUGUST 



Leslie B. Arey. The influence of light and temperature upon the migration of the ret- 

 inal pigment of Planorbis trivolvis. Nine figures 359 



A. T. R.'VSMussen and J. A. Myers. Absence of chromatolytic change in the central nerv- 

 ous system of the woodchuck (Marmota monax) during hibernation. Six figures 



(two plates) 391 



J. J. Keegan. a study of a Plains Indian brain. Eight figures 403 



Martin R. Chase. An experimental study of the vagus nerve. Four figures 421 



Leslie B. Arey'. Changes in the rod-visual cells of the frog due to the action of light. 



Two figures ■^29 



iii 



