INFUSORIA. 99 
“There is no microscopic object,” says Dujardin, ‘“ which excites 
the admiration of the observer more vividly than the twisting 
Spirillum ” (Fig. 31). He was struck with surprise when he first con- 
templated this little creature, which, under very high magnifying 
Fig. 29. 
Racterium termo 
The same, 
magnified 
1,600 times. 
yee 
i 
Fig. 30. 
Vibrio (Miller), 
magnified 300 times. 
We 
op 
Fig. 31. 
Spirillum (Ehr.), 
magnified 300 times. 
(Miiller), magnified 
600 times. 
. 
powers only presents the appearance of a thin black line, fashioned 
like a corkscrew, which every instant turns upon itself with mar- 
vellous velocity, so that the eye can scarcely foilow it. 
The Volvocinee were also at one time included among the flagel- 
Figs. 32 and 33.—Volvox globator (Miiller), magnified 700 times. 
late Infusoria, but now are more generally believed to belong to the 
vegetable kingdom, they are met with in fresh water full of Confervee 
and other aquatic plants. The Volvocinew are of a green or yellowish 
brown colour, with 300 spore-like bodies regularly disseminated in the 
thickness and near the surface of a gelatinous hollow globe. In this 
state, from five to eight smaller globules, with the same organisation, 
appear destined to undergo the same changes when they are released 
H 2 
