PART I, J 



Description of the Illustrations. 



59 



Shallow dish (containing a solution of permanganate of potash), with an inverted bell-glass, 

 inside of which is a small wire stage for elevating the preparation above the level of the 

 fluid in the dish ............... 



An Aspirator filled with water. One arrow represents the escape of the latter, and the other 

 arrow shows the course which the entering air has to take before it can replace the escaped 

 water . . . . . . . . . 



Plate VI. 



Fungi developed in a cholera stool. 



Fertile filament of AspergllluH ; some of the spores (conidia) are seen falling off . 



Pcnimlliuni ............. 



Cells of various sizes in the cultivation, probably modified spores ....... 



Very thin filaments terminating in excessively delicate mucor-like cysts or sporangia, some of 

 which are filled with elongated spores 



Plate VII. 



Mycelium developments in choleraic discharge. 



Highly developed specimens of mycelial filaments, with numerous dilatations (Macroeo/ddla^, 

 which separating are found as free circular cells in the field, capable of germinating like 

 ordinary spores (cultivated in cholera discharge) 



Plate VIII. 



Fvngi developed in or dinai'y f cecal evacuation. 



Spores in process of germination 



Micrococcus ................. 



Penicillium glaucura ............... 



Aspergillus 



Numerous filaments of Uidinm lactls, corresponding to the " cholera- fungus" of Thome 



1-2 

 3 

 1 

 2 



Plate IX. 



Fungi developed in ordinary f cecal evacuation, simulating Hallier's cholera fungus. 



Spores, cysts, and filaments of JIucor in various stages of development . , . . . 

 Escaped spores ................ 



Detached cyst or sporangium ............. 



Cysts still attached to the fertile filaments 



Heads of fertile filaments (Columella), with the remains of the ruptured cyst-capsules still 



attached 



JV.B. — Compare Nos. 2 and 3 with Hallier's figui'es (Plate I., Nos. 2 and 8). 



Ruptured mucor sporangia 



A ruptured cyst with spores escaping 



Ditto the spores having completely escaped 



Ditto detached from its stalk ............ 



A mucor cyst detached from the fertile filament. The spores are seen to escape through the 



capsule 



Aspergillus fructification simulating that of mucor; a glutinous film surrounding it, thus 



keeping the spores or conidia together. The fertile filament is seen to be partly ruptured . 

 Detached Asjjergillus heads of various sizes, the spores being held together by means of some 



glutinous material ............... 



Ditto in process of germination. N.B. — Compare with Hallier's drawing of the mature 



cholera-cyst in the same condition (Plate I. No. 11) .... ..... 



1 



2 

 3 



1 



2 



1-2 



3 



