544 THE AMERICAN NATURALIST. [VoL. XXXIV. 
belief that the * Glanzkórper" were of intranuclear origin, and 
were concerned in reproduction. Gould (loc. ciz.), working on 
P. palustris, failed to see evidence for the truth of these ideas, 
and in the form which I have studied there was no such evidence. 
Gould found the « Glanzkórper " to have a homogeneous appear- 
ance when stained with ordinary stains (the exception does not 
seem to have any special significance) ; and she reached the con- 
clusion that they were “almost certainly either solid structures 
or filled with coagulable 
fluid." With the latter al- 
ternative I agree. 
dor e Enda Ibe condition of the 
JU 5 albuminous globules in 
IPSE starved individuals deserves 
a word. In healthy, active 
specimens the globules are 
scattered all through the 
Fia. 10. — Portion of a starved Pelomyxa. Crystals endosarc. In certain in- 
eis Du Reed a 79 P "39 dividuals kept without food 
in pure water for several 
weeks, the globules were much more numerous than in normal 
specimens, and were aggregated together in several regions of the 
body. In each such region (Fig. 10) the globules were thickly 
crowded, while elsewhere they were nearly absent. These 
starved Pelomyxas were about one-third the common size of 
healthy specimens, and were exceedingly sluggish in movement. 
In specimens of Pelomyxa kept without food for some time 
the body contains no inclusions except such (granules, crystals, 
albuminous globules) as seem to be normal and constant con- 
stituents. Owing to its large size and freedom from foreign 
inclusions, P. carolinensis presents certain marked advantages 
for the study of the fundamental structure of protoplasm. As 
a living object it is perhaps no better than smaller rhizopods, 
though under a cover-glass the pseudopodia may flatten out 
into very thin sheets. On the other hand, it is easy to handle 
for sections, and in sections the vacuolar walls in particular are 
instructive. One of the large vacuoles may be cut into several 
sections, and will thus afford both true sectional and surface 
