220 



KANSAS UNIVERSITY SCIENCE BULLETIN. 



In the following cell nests I have taken the serial sections of 

 the same nest and counted them in the same way as I did the 

 single sections of the previously counted nests. I hope in this 

 way to in a -manner corroborate my results and also to study 

 the history of the cell nest farther. 



Cell Nest 10. This neiist was .4125 mm. in length, .0875 

 mm. in width. It was a nest that showed occasional spots of 

 six to eight cells that had broken down, an average of two of 

 these spots in each nest. The direct divisions occurred largely 

 in the upper, wider end, while the indirect occurred largely in 

 the lower, narrower end, but I have not illustrated this by 

 sketches. It was therefore taken as a nest, non-necrotic, but 

 near the stage when it would rapidly have become so, indicated 

 by the degenerate spots. 



The direct divisions averaged 1.68 rows nearer the center 

 than the indirect divisions. 



