386 



JULIA ELEANOR MOODY 



In order to discover and analyze the nucleus-plasma relations 

 existing at different periods of the life-history of Spathidham and 

 Actinobolus, I made measurements of many cells, in different 

 stages of cell growth, which had been fixed, mounted and stained 

 at different times during the life-history of the organisms. My 

 method consisted in drawing careful outlines of cells and nuclei 

 with the aid of a camera lucida at a magnification of 630 di- 

 ameters, and then making measurements of the projections. 

 The measurements of lengths and diameters used in the tables 

 are given in microns. In order to obtain a volume of Spathidium 

 which was approximately accurate, I used as diameter the aver- 



TABLE 1 



New cells of Spathidium spathula 



Average coefficient = 112 



