352 LEON AUGUSTUS HAUSMAN. 



PLATE II. 



FIG. 15. Dactylosphcerium radiosum stage. 



FIG. 16. Amoeba proleus in the adult stage, exhibiting long attenuated pseudo- 

 podia. 



FIG. 17. Adult normal Amoeba proleus (stained). 



FIG. 18. Tentative Cycle of Development, i. Adult stage. 2. Division of 

 nucleus; migration of nuclei to posterior. 3. Extrusion of the apseudopodiospores. 

 4. Amceba guttula stage. 5. Small A mxba proteus stage. 6. Amoeba radiosa stage. 

 7. Dactylosph&rium radiosum stage. 8. Resumption of amoeboid form; retraction 

 of pseudopodia. 9. Growth to adult. 



