86 H.. MARSHALL WARD. 



DESCRIPTION OF PLATES III— IV. 



Fig. 1. Sporangia of Myxornycete on the roots of Hyacinth. Natural 



size. 

 Figs. 2, 3 & 4. Sporangia magnified, o, the yellow border. Figs. 



3 & 4 are attached to the epidermis of the root : the 



spores can be seen within. 

 Fig. 5. Portion of wall of sporangium, seen from within, and showing 



places of origin of capillitium. 

 Fig. 6. Portion of wall seen from outside, with looser yellow net- 

 work. 

 Fig. 7. Sporangium bursting, and liberating spores. 

 Fig. 8. Burst sporangia, showing capillitium in situ. 

 Fig. 9. Spicules of calcium carbonate from walls of sporangium. 

 Figs. 10 & 11. Spores commencing to germinate in water. 

 Fig. 12. Spores after desiccation, after lying in alcohol. 

 Fig. 13. Abnormal and giant spores, drawn in outline only. 

 Figs. 14, 15 & 16. Spores germinating, in various stages (vide pp. 



74 seq.) 

 Fig. 17. Myxamoebae and zoospores which have emerged from the 



spores. Each has a cilium, contractile vacuole, and 



nucleus. 

 Fig. 18. A myxamoeba sketched at short intervals. 

 Figs. 19 — 20. Division of myxamoeba : stages at short intervals. 

 Fig. 21. Germination of an encysted myxamoeba. 

 Fig. 22. A group of myxamoebse. 



Figs. 23 — 24. Plasmodia resulting from the fusion of myxamoeba). 

 Fig. 25. Myxamoebse prior to their fusion into plasmodia. 

 Fig. 26. A large plasmodiurn. 

 Fig. 27. Pasting condition of plasmodia previous to the formation of 



sporangia. 

 Fig. 28. Apparatus used for cultivation of plasmodia (vide p. 84). 



a, glass slip ; b, fibulous paper cell ; c, cover slip ; d, drop 

 of water containing myxamoeba) and plasmodia ; e, a cork, 

 supporting (h) a piece of Hyacinth root by means of the 

 glass rod/. 



