20 TL. C. Hilgard—Infusorial Circuit of Generations. 
Art. I1V.—Infusorial Circuit of Generations; by THEoD. C. 
HILGARD. 
he 
are all evidently immature forms, subject to a vast cycle of oe 
gressive and retrograde developments and infinitely multiply- 
ing the molecular germs at every individual dissolution.+ A 
little salt, glycerine, or sugar destroys their present form; but 
they seem to be hardly affected by morphia or r atropia, even in 
strong solutio 
It is this feature of the non-endurance in nein up, which 
renders it at once certain, that no such sarcode bodies can 
continue to exist integro, when exposed to the full heat of 
summer, on a cracking dry tub, or on a roof, likewise as torrid 
as a blazing July sun can Paden it within four weeks. The same 
applies to all the confervaceous, palmellaceous, protoc occous, 
desmidiaceous, etc., fresh-water spawns, of true Mosses; which, 
once collapsed by drought, rarely continue growth in a progres: 
sive sense. ith the exception of their c “n 
Ea (specially adapted to endure even excessive Sepia they 
. e. exclusive of all the seve on tgabag rs ilica-coated, and oe 
Ree pees cau 
or featbaior cell-like sarcodic bodies and also the clear and vibrionic form 
to the algoid bryaceous prota ts. They are — classed =r green 
_ ia,” and also constitute the ‘“ Chloro ex” of ‘ 
rosperm 
+ The same doubtiess applies to a small ‘ Stentor Roe, is ue hovering up and 
down in water taken from ponds, aquaria, etc. It is of a hazy white color, 
ite oe to the naked Cys; and re maskabie for never touching the 
surfé When placed under the a drop e air, this 
expose nimal 
germ (in Shape resembling a Pie or a pis bean) is seen olny throwing 
“cloak ” or mantle, Berges bes intense ciliary (fingered) vibratory action, 
ae the interior surface It then throws out hyaline constitutive brood- balls of 
| with the same “ fingered” action—(a ed 
various sizes, 
sag — visible pentsy One ultimately entirely flows apart into such Sleshy 
cilia, the 
} This fo oe of ee muting “serial =. bead-strings enveloped in a 
foliaceous slime - mon to y the genus — and various 
brooding-phases of the algoid alate tiee Sp oscapa wie. With the ns, 
the internal ay wing ie of gee thallus often eon as is well known, in similar 
goid) tissue-fibers ; in @ manner 
giao repconmated bey - siatoaiy of Bldgettia pita sto ges in Harvey’s “Nereis.” 
