PL A TE XI. 



EXPLANATION. 



Figs. 1-19, Illustrating Deposit and Development of Infusorial Germs on 

 Hay-fibre, as described at Chapter IV. page 136 et seq. 

 Fig. 



1. Fragment of hay-fibre examined after six hours' maceration, showing 2X a a 



encysted Vorticella:^ and 2X b b b masses of microspores of Heterorniia lens, 

 X 800. 



2. Fragment of hay-fibre, wetted and immediately examined ; 3X a a a, microspores 



oi Heteromita lens; at <5,. four macrospores o{ Oikonionas miitabilisj ate, 

 macrospores of Heteronema candataj and at d, macrospores of an unde- 

 termined type, X 800. 



3. Fragment of hay-fibre, showing a.t a a. mass of microspores of Heteromita lens 



lodged in crevice formed by the serration of its surface, x 800. 



4. Fragment of hay-fibre encrusted with spore-masses of the single type Heteromita 



lens. 



5. Fragment of hay-fibre examined after two weeks' maceration, showing bacterial 



film and monad spores depending in grape-like clusters from its lower surface. 

 Minute monads developed from these spores, mixed with vibrios and Bacteria, 

 swimming beneath, x 800, 

 6-17. Heteromita lens, Miill. sp.^— 6, 7, Two isolated patches of microspores, x 800 ; 

 8, 9, free-swimming monadiform germs developed from the patches of 

 microspores, X 800; 12-15, similar monadiform germs in their primarily 

 attached and variously aggregated free-swimming states, as seen with a 

 •gL-inch objective, x 2500; 16 and 17, succeeding biflagellate condition of 

 the same germs, x Soo. 



18. Heteronema caudata, Duj, sp., developed from the mass of the macrospores 



delineated at Fig. 2 <:, x 800. 



19. Heteromita lens. — Adult monad, x 800, 



Figs. 20-46, Illustrating the Protozoic Nature of the Myxomycetes or 



MVCETOZOA, as discussed AT CHAPTER 11. PAGE 41 et scq. (FiGS. 32-35 AND 

 45-47 AFTER ClENKOWSKI, THE REMAINDER AFTER A. DE BARY). 



20. Arcyria incarnata, Pers. — Two sporocysts or sporangia ; the one at a burst 



and protruding its sporiferous rete or capillitium, x 15. 



21. Physarum plumbeum, Fries. — Numerous associated sporangia, slightly 



enlarged. 



