6/8 GREENE. [Vol. XV. 



separates the cells, thus rendering their outlines in sections 

 very distinct. 



The lens has no capillaries distributed to its substance. In 

 Golgi preparations nerve fibers were found distributed to the 

 superficial part of the lens and terminating among its cells in 

 small free varicose ends. The number was, however, not greater 

 than that found in the surrounding connective tissue of the skin 

 and seems, therefore, of no special significance (PI. XXXIXJ" 

 Fig. 8). 



2. TIic Gland. 



The gland forms a shallow cup surrounding the proximal 

 two-thirds of the lens. It is composed of cells varying greatly 

 in size and shape (PI. XXXIXf Figs. 5-7). The gland cells 

 are held in a mesh of connective tissue and capillaries and in 

 part by processes from the cells of the base of the lens. 

 They have their long diameters placed vertical to that portion 

 of the surface of the lens along which they lie. These cells 

 have large round nuclei which are often vacuolated. The 

 cytoplasm of the cells is very granular and is stained with 

 the greatest difficulty. In alcoholic material these gland cells 

 present an appearance which indicates that their granular con- 

 stituents are largely dissolved out. In fact it is impossible 

 to gain a true idea of the character of these cells from such 

 material, as I found after many trials. On the other hand, the 

 cells are beautifully preserved in Flemming's fluid and present 

 in such preparations the structure shown in PL XXXIXf Figs. 

 6 and 7. 



The gland is richly supplied with blood vessels, which enter 

 around the distal border and also by puncturing the reflector 

 below. The capillaries form a network among the gland cells 

 and are in sections generally filled with red and white corpuscles. 



3. The Reflector. 



The reflector forms one of the most striking structures of 

 the organ. It also is a cup-shaped mass which encloses the 

 gland and the proximal portion of the lens, extending up around 



