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wool, and the sarcode mass seemed to follow, until finally the 
wool was wholly covered by it at one end, the mooring 
pseudopodia disappearing at each end, whilst the general 
sarcode seemed to become stretched so as to envelope the 
wool. As the animal became thus extended along the fibre 
of wool which it had thus to a great extent incepted, it, 
of course, became somewhat more tense, and hence the wool 
took a curved or bowed figure, and the sarcode mass became 
stretched straight across the concave side, but thinly disposed 
along the convex, which is the state I have tried to represent in 
the accompanying drawing (fig. 2). During this elongation 
of the sarcode mass the central cells, now disposed in a 
nearly single stratum at the upper and lower ends, or even 
isolated, seemed in other places to have become extruded 
beyond the outline of the sarcode body. But, though seem- 
ingly thus expelled, they did not separate; and I conclude 
that they must have been removed beyond a certain region 
only of the sarcode body, that which presented the outline 
Avhose tenacity caused the bending of the wool, and that there 
must have been an outer stratum of a very hyaline character 
and great tenuity which was able to retain the so partially 
extruded central cells from becoming wholly cast off. How- 
ever inert, then, this organism when first detected under the 
microscope, and however great resemblance to some vegetable 
form which it might present under a low power which might 
not reveal the existence of the pseudopodia — nay, hardly even 
render it very discernible, without some practice, from some 
of the Protococcaeeous forms which presented themselves in 
most of the gatherings in which this form was found — yet 
such an observation as that detailed demonstrates that this is 
really a rhizopod, and the amount of energy displayed after 
coming into contact with the foreign body, as compared with 
its ordinary comparatively inert state, was very curious to see. 
I had, however, on the very first occasion I detected this 
form, quite satisfied myself of its true nature by a prolonged 
observation. 
A consideration of the characters of this lowly creature, 
simple and few as they may be, yet suggests affinities with 
its allies not a few, and those various ; and, in attempting to 
draw attention to them, it is a difficulty to what side we 
should first turn. Of course, it is only amongst the naked 
rliizopods, or those destitute of a test, that, according to re- 
ceived views of classification, we have to look for its imme- 
diate allies. To Gromia our form offers some resemblance 
in the somewhat branched and not unfrequently inosculating 
pseudopodia, but they are far finer and more slender : there 
