500 0. f'LIFFORD DOBKLL. 



Fig. 14. — Bacillus containing a large and almost fully formed spoi-e. 

 Residual chromatin is seen lying in the cytoplasm outside the spore. 



Figs. 11, 13, 15-20.— Smaller Bacteria, found in company with 

 B. saccohranchi. 



Fig. 11. — Chain of three individuals with nuclei of spirogyra type. 



Fig. 13. — Short, thick Bacillus with nucleus in the form of short, thick, 

 irregular I'odlet. pointed at one end. 



Fig. 15. — Bacillus with nucleus in the form of a varicose spiral or 

 zig-zag filament. 



Fig. 16. — Bacillus with nucleiis in irregular masses. 



Fig. 17. — Two Bacilli with nuclei in the form of short, irregular 

 rodlets. 



Fig. 18. — A similar organism, with nucleus undergoing division. 



Fig. 19. — Three very small Bacilli with nuclei of spirogyra type. 



Fig. 20. — Group of five small Bacilli with spirogyra type of nucleus. 



Figs. 21-23. — Bacilli of flexilis type, from large intestine of Mabuia 

 carinata. (Osmic acid 1 per cent., drop method ; Leishman"s stain.) 



Fig. 21. — Ordinary individual, with chromidial nucleus. 



Fig. 22. — Similar individual. The chromidia ai-e smaller and more 

 numerous than in the preceding. 



Fig. 23. — Spore-bearing (dispone) individual. The spore-coats are 

 stained blue, and a certain amount of residual chromatin material is 

 seen in the cytoplosm. 



Figs. 24-29. — Sarcinafrom large intestine of Bufo melanostictus. 

 (Osmic acid 1 per cent., drop method; Giemsa's stain.) 



Fig. 24. — Organism in two-cell stage. Small spherical nuclei (red) 

 in each cell. The upper cell contains a refractile granule (white). 



Fig. 25. — Four-cell stage. In the upper left-liand cell the nucleus 

 lias divided into two. The three other cells each contain a single 

 nucleus. In each cell a single refractile granule is present. 



Fig. 26. — Three-cell stage. The nucleus in the right-hand cell has 

 divided into two. but fission of the cytoplasm has not yet occurred. 

 The upper and lower left-hand cells contain dividing nuclei, of 

 characteristic dumb-ljell form. A single large refractile granule is 

 present in the right-hand cell; the left-hand cells each contain a single 

 and smaller refractile granule. 



Fig. 27. — Three-cell stage. The left-hand cells each contain a single 

 nucleus and a single refractile granule. The right-hand ceU shows a 

 nucleus undergoinu; division. 



