PLATE III. 



Fig. 50. Second maturation division, condition h } 2. 

 Fig. 51. Second maturation division, condition h } 3. 

 Fig. 52. Second maturation division, condition h, 4. 

 Fig. 53. Anaphase of the second maturation division. 

 Figs. 54, 55. Telophases of second maturation division. 



Figs. 57-96. Successive stages in the histogenesis of the sperm, all from the testis; in figs. 82, 

 83 only the nuclei, centrioles and axial thread are drawn. 



