230 MAR(,AKKT R. MURRAY. 



PLATE I. 

 EXPLANATION OF FIGURES. 



1. Follicle-cells and a part of the C-egg, fixed by the Regaud method, and 

 stained with acid-fuchsin and methyl green. Longitudinal section 3 micra in 

 thickness; cells 1.67 micra in length. Drawn with camera lucida; enlarged to 

 four times the area. Fuchsinophile granules in cytoplasm of follicle-cells and in 

 cytosome of egg are figured black; globules staining with methyl green are stippled; 

 dissolved globules are left white. 



2. Follicle-cells and a part of the cytosome of the B-egg, fixed in Bouin's fluid 

 and stained with Delafield's acid haemotoxylin. Transverse section 5 micra in 

 thickness; cells 3 micra in length. Drawn with camera lucida. Refractive 

 granules of the proximal region of the cytoplasm are stippled more lightly than the 

 large type of globules in the yolk substance. 



3. Follicle-cells and a part of the yolk-substance of the -B-egg, fixed in Champy's 

 mixture of osmic and bichromate and pyrogallic acid; unstained. Longitudinal 

 section 4 micra in thickness; cells 2.5 micra in length. Drawn with camera 

 lucida. Two kinds of granules are shown in the nucleolus; refractive granules 

 are shown in the proximal region of the cytoplasm of the follicle-cells. 



Symbols, 



d.g., distal droplet, f.g., fuchsinophile granules, i.g., intermediate globule. 

 l.g., large type of globule, n.s., nuclear strand, v.m., vitelline membrane. 



