268 J. B. GATENBY AND J. H. WOODGER 
vulgaris, Cynomys, Myoxusglis, Cavia, Equus, Capra, 
Alces, Bos, Canis, and doubtfully in Dicotyles. In the sperma- 
tozoa of the following the bead does not appear in Retzius’s 
figures: Homo, Didelphys, Talpa, Bradypus, Dipus, Hystrix, 
Lemmus, Mus, Myopotamus, Cervus, Rangifer, Globicephalus, 
Vulpes, Meles, Halichaerus, Hapale, and Innus. Some of 
TEXT-FIG. 2. 
10p 
A Da Fano (8) preparation of the epididymis of Cavia. At N is 
the nucleus, and at Ga the Golgi apparatus of the cells of the 
epididymis. At x are the middle-piece Golgi apparatus of 
the ripe spermatozoa impregnated like the Golgi apparatus of 
the epididymis cells. (Original.) 
these are, however, doubtful, and may possess the bead in 
a very reduced and atypical condition. 
If now, as Weigel (82) has shown, the epididymis of Cavia 
be prepared by one of the Golgi apparatus techniques (Golgi, 
Cajal, or Da Fano), the protoplasmic beads of the free sperma- 
tozoa lying within the tubules are all found to contain a number 
of little rodlets or elongate platelets as shown in Text-fig. 2 
at x. In this figure, drawn from a preparation by Da Fano’s 
