STUDIES ON INSECT SPERMATOGENESIS. 329 



called the "sphere" (see Montgomery ('n), Fig. 48). His 

 figures are characteristic of preparations fixed for instance in 

 Benda's Flemming, in which the shape of the " sphere " seems 

 certainly to be an artifact. 



The shape of the Golgi bodies is much the same in all the cells, 

 but their size varies with that of the cell as a whole. In the early 

 growth stages (Fig. 4) the bodies appear as rods, straight or 

 curved, which impregnate intensely, and when they have become 

 laree enough to admit of a closer studv of their structure it be- 



o o 



comes evident that the intensely black portion is accompanied by 

 a substance which impregnates little or not at all (Fig. 6). Usu- 

 ally the rods are bent around this substance enclosing it more or 

 less completely. The two portions taken together form the 

 Golgi bodies, which are plate-like and not spherical. Viewed on 

 edge, these plates or discs present a most characteristic appear- 

 ance, for the rods are actually double and thus the impression is 



A B CD 



TEXT-FIGURE i. 'Schematic representation of a single Golgi body. A, after 

 fixation by the " modified Kopsch " method ; B, the same as seen on edge ; C, 

 after fixation and staining by chrome-osmium-hematoxylin methods ; D, the 

 same as seen on edge. 



given of a pair of rods lying side by side (Text-figure ifr) and 

 separated by a clear space. So constant is this apparent " split " 

 that from very early stages until the final condensation of the 

 Golgi apparatus in the spermatid, it is the most striking charac- 

 teristic of this kind of technique. In the late growth period in 

 Euschlstus, the structure of the Golgi bodies is especially clear 

 (Fig. 7). Each disc-like body is clearly composed of two sub- 

 stances, a peripheral portion impregnating very densely and en- 

 closing, sometimes completely, a plate of material which is only 

 slightly blackened. The peripheral portion often appears as a 

 double rim, the meaning of which is not clear (Text-figure la). 



