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Presently a few of these processes seemed to drop off, and 
showed a slightly capitate lower extremity, and several 
showed a more or less curved figure. I tried in Fig. 6 
to convey an idea of the appearance such detached processes 
now presented to me. But, perhaps, the most interesting 
result followed the application of a stronger dose of sulphuric 
acid, when at once the outer coat, hair-like processes and all, 
became quickly dissolved, leaving the sarcode body a naked 
somewhat sharply-bounded globular mass, the contained 
granules broken up, the pale elliptic bodies dissolved or 
disappeared. ‘The result of this experiment was, therefore, 
not less satisfactory than the preceding, though in a reverse 
kind of way, in demonstrating the complete difference and 
independent character of the outer coat and the inner sarcode 
body-mass. 
I have to add, that any reagent applied to an individual 
showing the faint and pellucid outer investment already 
described and attempted to be portrayed in Fig. 3, causes 
its immediate disappearance, even though its action be too 
weak to call forth any of the previously mentioned results. 
All these experiments, then, seem to me to corroborate 
and shed a light upon the interpretation previously advanced 
of our examination of the structure of the living rhizopod. 
Perhaps, indeed, some may think the word “structure” 
misapplied to a being so lowly, and, after all, so little 
differentiated ; but, at least, like other Rhizopoda, it can- 
not be denied its special characteristics, even by those to 
whom one sarcode-patch is the same as another sarcode-patch, 
each of which is only moulded into this or that by accident. 
Here is a “form,” at all events, which may or may not be 
independent, but such a form in its “specific” details, 
so far as I am aware, as has not yet met observation. Until 
then it proves to be but a transitory form, it possesses quite 
as distinguishable features as very many others constantly 
recurring ; it has presented itself in three distinct localities 
—one a hundred miles and more distant from the two others— 
and, on the whole, deserves a record as well as more familiar 
types. 
But having now gained as much acquaintance with the 
characteristics of this rhizopod as present research has 
disclosed, we may just for a moment speculate as to the 
analogies, so to say, of its composition. The central body of 
all, the so-called ‘‘ nucleus,” is, of course, quite homologous 
with the similar so-called body in Ameeba, in Difflugia, in 
Diaphoropodon, in Pleurophrys, in Euglypha, in Cyphoderia, 
in Plagiophrys, in Pamphagus, &c. &c. ‘The tapering hyaline 
VOL. XI.—NEW SER. 1 
