Animals. New York, D. Appleton & Co. 1866. 
H. J. Clark on Polarity and Polycephalism. 69 
Art. IX.—Polarity and Polycephalism, an essay on Individu- 
ality; by H. James Cuarx, A.B., B.S., Prof Nat. Hist. 
Kentucky University ; Lexington, Ky.* 
monocephalhic being; that they have taken as their standard the 
most highly developed creatures of the animal kingdom, whose 
oneness and independence place them on an equal footing with 
man in these respects. In the discussion of late years upon the 
_ individuality of the lower, compound, colonial denizens of the 
water, the main points at issue have always been to determine 
whether a certain form was, on one hand, an individual, either 
in its highest sense (a monomeric, independent integral) or one 
of several interdependent individuals which constitute a colony 
(a polymeric integer), or, on the other hand, was an organ, whie 
rt 
* This is an extract from a forthcoming memoir on the anatomy and physiology 
of Lucernarize, 3 
+ Mind in Nature, or the Origin of Life and the Mode of Development of 
* 
