224 H. J. Clark on Anthophysa Miillert. 
A considerable portion of the second volume of the great 
work of Messrs. Claparéde and Lachman, ‘“ Etudes sur Jes Infu- 
soires,” &c., is occupied by a discussion of the animality of cer- 
tain doubtful forms of Monad-like infusoria. The tests which 
these authors offer as determinatives of the zodlogical relations 
animal nature—and not because he had by direct observation 
decided it to be a genuine animal, The figures of Cohn (Mikro- 
skopische Algen und Pilze. Nov. Acta Acad. Cs, Leop, 185+. 
Taf. xv, fig. 1-8) are not much better than those of Dujardin. 
Habitat and general appearance.—I have been so fortunate as 
to determine the animality of Anthophysa by both of the tests 
above mentioned; and there rests not the least doubt in my 
mind that this infusorian is as truly a member of the zodlogical 
kingdom as any of the well known Protozoa. I would state, 
for the information of those who are not acquainted with the 
habits of this animalcule, that it is quite common among the 
fresh water weeds. It may be most advantageously studied 
when it is attached to Myriophyllum or Ceratophyllum ; a small 
piece of the tip of the filiform leaf, of either, which seems to be 
covered by an irregular, floccose deposit, usually affording abun- 
dant specimens. 
Under a low magnifying power this floccose matter appears 
to consist of clusters of very jagged, irregularly branching and 
contorted, semitransparent, intertwined stems and projecting, 
tapering and flexible twigs. ach of the tips of the latter sus- 
tains a single, more or less globose mass of spindle-shaped bod- 
ies, which radiate from a common center of attachment; and 
are kept in a constant agitation by the spasmodic jerks of a 
long, stout, usually rigid, areuate filament, with which the free 
end of each one is endowed. The whole bristling mass revolves 
alternately from right te left and from left to right; whirling 
upon its slender pivot with such a degree of freedom that one 
might almost suspect that it merely rested upon it, and had no 
truer adhesion to it than the juggler’s top to the end of the 
PE en ee en eee 
