THE MYXOMYCETES OR MYCETOZOA ; ANIMALS OR PLANTS P 115 
Figs. 12-14. More advanced germs which have again assumed the repent 
amoeboid state, x 390. 
Fig. 15. A small repent 1 plasmodium/ produced through the further 
development and continuance of a number of the preceding 
amoeboid units ; at i, ingested food substances, x 390. 
Figs. 16, 17. Encysted plasmodia ; the one at 16 containing numerous in- 
gested AEthalium spores, x 200. 
Fig. 18. Young repent plasmodium, with fine, hair-like pseudopodia de- 
veloped posteriorly, x 390. 
Fig. 19. A ramifying plasmodium extended on a glass slide ; natural 
size. 
Fig. 20. Fragment of the same plasmodium, x 45. 
Figs. 21-34. Lycogala epidendron, Fries. v if ter De Bary). 
Fig. 21. Two matured sporangia attached to tan-wood, natural size. 
Fig. 22. A mature sporangium in perpendicular section, showing disposition 
of capillitium, x 10. 
Figs. 23-30. Successive developmental phases from the spore through the 
flagelliferous stage, until at 29 and 30 the condition of young 
repent plasmodia is arrived at, x 390. 
Figs. 31-34. More matured plasmodia, that at 32 exposed to view through 
making a section of tan-wood, x 390. 
Fig. 35. Arcyria cinerea , Fries. 
Figs. 36-45. Arcyria Punicea , Pers. ( after De Bary). 
Fig. 35. Matured sporangium, x 30. 
Figs. 36-45. Developmental phases from the germination of the spores 
through a monadiform condition to the repent plasmodium 
state ; the example at 45 with i, ingested food particles, x 390. 
EXPLANATION OF PLATE IV. 
Figs. 1-14. Didymium Libertianum, De Bary {after De Bary. 2-14, after 
Cienkoivski). 
Fig. 1. Matured sporangium in longitudinal section, showing capillitium, 
x 25. 
Figs. 2-9. Developmental phases from the germination of the spore to the 
condition of small repent plasmodia, x 350. 
Figs. 10 and 11. Small repent plasmodia increasing their dimensions through 
coalescence with the more minute amoebiform units a a a, x 350. 
Figs. 12 to 14. More matured plasmodia, that at 12 in the act of engulph- 
ing a large food corpuscle, i, and that at 13 filled with similarly 
ingested corpuscles, the attenuatedly extended plasmodium at 14 
with four laterally developed contractile vesicles, x 350. 
Figs. 15 to 22. Similar developmental phases of Didymium ( Physanim ) 
album ; at 21 the amoeboid units uniting to produce the young 
plasmodium, fig. 22, x 350. 
Fig. 23. Spore containing two germs. (After De Bary.) 
