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intervals between the granules do not appear like septa, nor has 
the organism a jointed appearance. The intervals between the 
variously sized and somewhatvariously figured granules are, indeed, 
but the irregular interspaces between these, enclosed within a 
common cayity, not septa shutting off distinct “joints;” it is 
unilocular. Be it, however, as it may, the production now shown 
is not at all uncommon, but not till hitherto had the idea pre- 
sented itself that it is most likely a stage of the nondescript ellip- 
tic body above referred to; and this Mr. Archer concluded not 
only from the great resemblance of both envelope and contents 
in each, but from frequently finding, in the same gatherings, ‘spe- 
cimens intermediate in appearance between the two ; of course 
the decisive proof would be the evolution from the larger ellip- 
tic quiescent form of the smaller elongate motile ones, but of this 
Mr. Archer had as yet no direct evidence. But though it has 
been mentioned that the shiny, greyish granules appertaining to 
the narrow motile form are pretty nearly in single file and few, 
this applies to what may, for the occasion, be called the typical 
form thereof. Sometimes narrow cylindrical or subelliptic ex- 
amples occur with granules, quite identical, densely scattered 
therein ; in fact, the whole quite like the ordinary larger elliptic, 
presumed quiescent condition of the same thing, except in being 
narrower, more cylindrical, and smaller, and these latter evince a 
very decided locomotive power, accompanied by a revolution on 
the longitudinal axis. And here, as little as in the narrow taper- 
ing form with the granules, on the whole, in single file, the larger 
in the middle, can any cilia or flagella be detected, and these look 
exceedingly like as if they were produced by an increase in 
number of the shiny, greyish granules, accompanied by an expan- 
sion or enlargement of the hyaline delicate outer envelope, just 
as if they were growing on to acquire the size and appearance of 
the quiet state—as if reverting to our original puzzle, in fact, 
some of which, indeed, sometimes, as mentioned, show a faint 
inherent movement. 
This “ 80” affair, however, presents two states different from 
what has just been described for it; one is a far paler condition, 
the granules very much smaller than usual, the remainder of the 
watery looking contents colourless, while the outer wall retains 
its usual appearance, giving the whole a far more hyaline general 
aspect; the other is what may be said to be, on the whole, just 
the reverse of this, that is, an increase in quantity of the shiny, 
opaque granules and a disappearance of the common bluish en- 
velope, possibly burst by the enlargement due to the greater abund- 
ance of the granules, these now forming an irregularly spreading, 
interrupted cluster; still, each granule, or sometimes a small 
aggregation of these granules of such a group, appears to have 
acquired a faint bluish pellucid envelope, somewhat, indeed, like 
the original common one. As to the first of the just-mentioned 
conditions, Mr. Archer would venture to conjecture nothing; it 
looks “abnormal,” or indicating decay. As to the second, it has 
