426 H. James-Clark—The American Spongilla, 
is any such fusion of corresponding fibres as suppose 
Art. LIV.— The American Spongilla, a craspedote, flagellate 
Infusorian ; by H. J AMES—CLARK, 05: De Sear E POL I 
Hist., Kentucky University, Lexington, Ky. (With a Plate). 
not altogether mere cell-components of a tissue, but are each, 
severally, an independent body, although closely connected 
with others in a common bond, then the =e parallelism 
between the two groups must utterly fail of confirmation. ie 
is a eae ey member (a cephalid in this case) of a polycephalie 
individual.* We believe, as far as we can understand his un- 
not a polycephalic unit. Yet, whichever view prevails, the 
© Gin deii-daticde on “ Polarity and ; ism,” this Journal, January, 1870. 
| " rai reas : ph ae 
+See Carter, On Fe im the two Volvoces; on Eudorina, 
enone ana Magazine Nat. Hist., January, 1859; also for July, 1871, On new 
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