io8 



GARDINER. 



DESCRIPTION OF PLATE XI. 



Figs. 28, 34, and 35 magnified 1 140 times, all others 1500 times. 

 Fig. 2S. Section through the region of the equatorial plate before the chro- 

 mosomes are formed. 



Fig. 29. Particles of chromatin consolidating in the nucleus. 



Fig. 30. A portion of Fig. 28 enlarged. 



Fig. 31. Centrosome. 



Fig. 32. Centrosome. 



Fig. 33. Centrosome. 



Fig. 34. The equatorial plate. 



Fig. 35. A portion of the sperm aster and the male pronucleus. 



