PLATE 8 
EXPLANATION OF FIGURES 
35to 37 To show origin of asters in connection with partial sperm nuclei. In 
each case a remnant of the spermatozo6n on the surface guarantees the partial 
nature of these sperm nuclei; note the variation in size. History: Centrifuged 
7200 revolutions in forty seconds, fifty minutes after insemination; preserved fif- 
teen minutes later. Fig. 36 is a combination of three sections. 
470 
