PART I.] Description of the Ilhisti'-ations. 57 



processes, which were observed to wander throughout the fluid something like the 

 " horns " of a snail. To these processes monads and small vibriones adhered, which 

 were drawn into the substance of the moner as the processes were retracted. Three 

 days afterwards, all the moners had become spherical and perfectly still (cvii). 



The other animalcules which made their appearance were those commonly met 

 with, and require no special description. They are figured at xcvii and xcix, where 

 the names are also given. 



Having already alluded to the chief points in connection with these experiments, 

 whilst describing the various places visited, it is not considered necessary to refer to 

 them again. The observations concerning the physical geography of the stations are 

 of a more superficial nature than I could have desired, but the time at my disposal 

 was very limited, and correct information on such matters could not be obtained 

 without personal inspection. It will, indeed, be evident that the experiments referred 

 to in the whole of this report are of an elementary nature. This is, in part, owing 

 to the short period which has elapsed since they were commenced, partly also to my 

 having been tempted, by the desire for results, to keep too many irons in the fire. 

 I trust, however, that what has been done will prove to be a foundation whereupon 

 better things may be built. 



In conclusion, I respectfully tender my most sincere thanks to Dr. Muir, C.B., 

 Inspector Greneral of Hospitals, British Troops, for the assistance which he has so 

 gladly rendered on every possible occasion to further this inquiry, and for the personal 

 interest he has taken in the details thereof; also to Dr. Cunningham, the Sanitary 

 Commissioner with the Government of India, for similar aid, not less cheerfully given. 



A CONDENSED DESCRIPTION OF THE ILLUSTRATIONS. 



Plate I. 

 A copy of Hallier^n drawing of the clwlera fungus. 



NOS 



Mature cholera " cyst," swollen and ruptured 1 



Cholera cysts less mature .,............••• 2 



Swelled " spores,'' which were supposed to have escaped from cholera cysts ; some of them are seen 



degenerating into " Micrococcus "............•• ^^ 



'■Micrococcus Colonics" — («) Colony formed by the breaking up of a single spore. (^) Ditto still further 



broken up. (f) A group of " Colonies " corresponding to several spores. (fZ) Germina.tmg"3ficrococcus^' 4 



'• Micrococcus " germinating 5 



Ditto filaments beginning to be formed .........••• fi 



Highly developed filament with cyst (c), and macroconidia (w) .......••<" 



A cholera cyst or sporang lum not fallen off, but still attached to its fertile filament ...... 8 



Filaments illustrating the tendency to the formation of Tillctia caries. What was considered a matured 



spore of the latter is marked .sp • . . 9 



An aggregation of " cholera cysts '' . . . . . . . . . . . • •. • .10 



A " cholera cyst " germinating 11 



