CHLAMYDOMYXA MONTANA. 239 
the protoplasm which also gives rise to them, as is the case 
with the axial fibres of the pseudopodia of Heliozoa.'! The 
oat-shaped corpuscles also are to be regarded as inert nuclear 
bodies, inert so far as motility is concerned. 
The movement of the oat-shaped corpuscles along the threads 
is, I believe, produced by an exceedingly delicate coating of 
hyaline protoplasm. Of the existence of such hyaline proto- 
plasm, which is neither filament nor corpuscle, we have 
evidence, firstly in the agglutination of the filaments when not 
extended, and secondly in the movement of contraction and 
expansion of the mass of filaments. I do not think that it is 
possible anywhere actually to see as an isolated substance this 
delicate ‘‘ varnish ” of hyaline protoplasm, but it seems to me 
reasonable to infer its existence. 
Thus I should regard the filaments of Chlamydomyxa as the 
delicate skeletal supports of a still more delicate streaming 
protoplasm, in which, as in coarser pseudopodial expansions, 
parallel currents of different rates or opposed in direction 
may arise. 
The Central Pigmented Corpuscles.—The centre of the disc or 
irregular body, which is the form taken by Chlamydomyxa 
montana when in the free motile state, consists, as shown 
in figs 1—4, of a number of rounded corpuscles closely 
pressed against one another, and of a yellow-brown colour 
with a tendency to a greenish tint. There is no doubt that a 
colourless protoplasmic substance invests each of these cor- 
puscles, and whilst holding the mass together is continuous 
with the colourless marginal substance or border of the disc. 
These corpuscles are of fairly uniform size (1, of an inch in 
diameter), and are of viscid consistency. I consider them as 
identical in character with the green vesicles described by 
Bourne as forming the bulk of the structure of his Pelomyxa 
viridis (see this Journal, vol. xxxii ,1891), and I entirely agree 
with him in separating them altogether from relationship to 
‘ I am inclined to think that such an elastic filament, one-sided in posi- 
tion, must be present also in all cilia and other forms of vibratile protoplasm. 
