31 
which, it enters into its quiescent state (fig. 38), still hanging on to the 
Conferva stem. As this Amoeba has absolutely no structural differentiation 
in any part of its body, nothing like an opening or mouth can be seen. 
But the empty joint, after sheath and chlorophyll have disappeared, shews 
an opening where, through the rupture, the contents have been extracted. 
The process implies either an endosmotic movement dependent on different 
density of chlorophyll and protoplasm, or an active dilatation of the plasm 
body of the Monad (perhaps also some elastic retraction of the Spirogyra 
membrane.) The opening seems to shew that the Monad has the power of 
dissolving the substance of the vegetable membrane. Cienkowski believes 
that this Monad selects its particular plant, as he never observed it attack 
any other stem placed in its way. (Vaucheria and Oedogonia stems). 
After the animal, having fed itself to repletion, has digested its food, 
the green colored chlorophyll aliment gradually alters into red sarcode. 
The rays are first retracted, then a thin outer shell or skin of nitrogenous 
substance is formed, and under this a soft cellulose covering. The contents 
meanwhile grow red colored, and then the cell-like appearance of the 
Amoeba corresponds to the phase with which we commenced (fig. 38). The 
contents of this quiescent cell shew a central mass of red colored sarcode, 
denser in the centre, with a cell wall which sometimes exhibits a warty 
appearance. The undigested remains of food lie outside the cell (fig. 45). 
The history of developement of the animal in its quiescent state is not 
complete. Are any other plasts formed in the second quiescent cell ? The 
Amoebse are described as coming from the first cell (fig. 38). What takes 
place in fig. 45 and its sequel ? 
The second species of Vampyrella (pendula) so far as its Amoeba phase is 
concerned, is chiefly distinguished by the absence of any moving granules 
in its substance or in its rays, but the cell state and quiescent phase differ 
from that of the former in the following particulars :— - 
The Vamp, pendula is not so choice in selecting Spirogyra stems, but 
feeds on the chlorophyll of Oedogonia, Bulbochseta and other slender Conferva 
stems. When passing into the cell stage the Amoeba draws in its rays, 
becomes pear-shaped, and fastens itself by its pointed end to the stem ; the 
food ingested is seen to ball itself together in the centre, as if within a 
membrane, whilst through the unoccupied small end, a stiff straight spine 
or thread, runs from the surface of the inner cell to the exact point of the 
outer membrane, which is adherent to the stem of the plant on which the 
creature has fixed itself, (figs 46-48). In the cell stage Amcebse (2-4) are 
produced, and pass out by separate openings from the cell membrane (which. 
