T. C. Hilgard—Infusorial Circuit of Generations. 23 
front, and the cupular-compressed, dead, chlorophylline mass 
remains inert and void of life until devoured nfusoria or 
the zymotic fungus. The cell-coat, likewise, is effete, while the 
large globular and somewhat acicularly-granulated incubus, 
after a few very wry contractions, at once widely opens a large, 
ciliate mouth, gaping across the sphere’s surface ; and disengag- 
ing or displaying a girdle of cilia round the rear part of the 
y, it immediately represents the free-roving Vorticella in full 
equipment. 
Its subsequent “ encystment,” into a spherical cyst densely 
covered with short prickles (somewhat like the rim of a Helio- 
pelta) and containing entrail-like designs, is well known.* 
Also, that it eventually bursts—occasionally, at least—and dis- 
gorges a peculiar sort of wafer-shaped, elliptical (not ellipsoidal !) 
cells, or nuclei, whose ulterior fate and abode, however, hitherto 
t 
of their shape, they znhere, as an almost rage Ge pellicle 
or stratum, which to the microscopic observer is the instantane- 
clear granular nucleus or “germinal speck ” inside. 
The multiplication of the pedunculate Vorticelle, by fission, 
lengthwise, and by budding-out, sideways, at the rear end, is 
ng | gularly 
about, and ‘rebounding at head-long speed, within a few 
minutes it “settles” upon some suitable surface, with the 
* In fig. 215, Carp. “ Mier.” (p. 446), the short prickles are omitted, B. to E. 
