196 KANSAS UNIVERSITY SCIENCE BULLETIN. 



probable course of the nerve grooves, is shown on plate X, 

 figure 1. 



I here wish to thank the following for the interest shown 

 and assistance given in the preparation of this paper : Mr. 

 Frank Springer, for many valuable suggestions; Dr. C. E. 

 McClung, for much assistance and for the fine photographs, 

 all of which he kindly made ; and Miss Nadene Nowlin, for the 

 drawings. 



