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remarkable fact connected with the whole matter, is that all 
of these forms are precisely similar to creatures which have 
been ranked by Ehrenberg and others in the animal 
kingdom, under different names, but most commonly that of 
Euglena. To make the resemblance to the Euglenas still 
more marked, as soon as the circlet of ciliz has disappeared, 
and the mass elongates, a bright red spot appears near the 
clear end, and usually also, oné or more clear seeming vacu- 
oles are seen to arise within the green mass. The red spot 
has been called an eye, and the vacuoles stomachs; and in 
this way Ehrenberg was enabled to classify these forms as 
“Polygastric Animalcules.” The spirally twisted forms have 
been placed in a separate genus and in fact I have seen, in 
the way mentioned, developed fromthe cell-contents of a 
filament of CEdogonium forms identical with several genera 
of “Polygastric Animalcules.” After a little longer time the 
cell-contents have again changed in appearance so as to be 
coarsely granular, each granule being so large and distinct 
that it can readily be distinguished, and now the active 
motion of the mass. ceases, and it takes on the static con- 
dition. This it does by increasing in size, elongating and 
losing its cilium and red “eye” spot, while the clear portion 
elongates, sub-divides, and branches out and becomes fixed 
either to a full-grown filament of Gidogonium or some other 
submerged substance that may serve it as a support. Now 
the cell-contents become finely granular again, and arrange 
themselves against the cell-wall which is thickened consider- 
ably. Soon a bending in of an inner membrane, or “ Prim- 
ordial Utricle” is seen to take place and cell-division 
after the well-known method occurs, until a filament is 
formed exactly like that from which the original green 
sphere was projected. 
The important points, then, recorded in this note are the 
finding of the means by which the active spherical form is 
converted into the still state previous to growth into a fila- 
ment. The most remarkable fact, however, is the identifi- 
cation of this phase with one or more of the forms which 
have been hitherto classed either in the vegetable or animal 
