PLATE III. 



MUCOR V. 



Figures 40-44. (Obj. A. oc. 4.) 

 Figures 40-44. Stages in conjugation drawn at the intervals noted from a van 

 Tiegliem cell culture, into which a mixture of (+) and (— ) spores had been in- 

 oculated. 



PHYCOMYCES NITEN8. 



Figures 45-47. Branching at contact of (+), and (— ) mycelial hyphae. (Obj. A. 



oc. 4.) 

 Figure 48. Progametes before their subterminal separation. (Obj. C. oc. 4.) 

 Figure 49. Progametes after subterminal separation. (Obj. A. oc. 4.) 

 Figure 50. Gametes and suspensors showing outgrowths arising from the (— ) 



suspensor. (Obj. A. oc. 4.) 

 Figure 51. Stage in hybridization, between P. nitens and 21. Mucedo. (Obj. 7. 



oc 4.) 



