THE KANSAS UNIVERSITY 

 SCIENCE BULLETIN. 



Vol. IX, No. 9.] DECEMBER, 1914. [vl HO x?x s T o n 



Wax Reconstruction of Brain of an Embryo 



Lizard (Eumeces.) 



BY CLARENCE L. TURNER. 



Plates XXYIII-XXXI. 



[Contribution from the Zoological Laboratory No. 211.] 



INTRODUCTION. 



THIS investigation was done with a view to comparing the 

 general features of an embryonic brain with those of an 

 adult lizard brain. The dissection of so small a brain was im- 

 practical, so the reconstruction method was used. No attempt 

 was made to study the brain in connection with the skull and 

 the other structures, although considerable information was 

 gathered concerning them during the course of the work. The 

 brain, with the cranial nerves and other appending structures, 

 has been studied by itself, especial attention being given to 

 the shape and relative position of the different lobes, the char- 

 acter of the cavities, the points of attachment, and to some de- 

 gree the extent of the cranial nerves and to the changes in 

 shape and position of parts that must occur between this stage 

 and the adult stage of the brain. 



The work was begun at the Ohio Wesleyan University dur- 

 ing the year of 1912-'13, under the supervision of Prof. E. L. 

 Rice of that university, and completed in the University of 

 Kansas. 



MATERIALS AND METHOD. 



A set of slides kindly loaned by Doctor Rice furnished the 

 material for the work. The slides contained a complete series 

 of sections of the head of an Eumeces embryo, which had the 

 following measurements : From tip of snout to posterior end 



(ill) 



