158 METAMORPHOSES OF MAN 



Saars, we shall designate by it all the compound 

 beings which proceed from the scolex, and are 

 destined to give rise to isolated individuals. Finally, 

 borrowing Dujardro/s expression, proglottis, which 

 has been used by him in almost a similar sense, we 

 shall apply it to the individual which proceeds from 

 the strobila, and which, acquiring true reproductive 

 organs, thus completes the circle. 



We saw that from the Aurelia there was produced 

 a scolex, which at first exactly resembled an infusorian, 

 and afterwards assumed the polyp form; and that 

 whilst in this condition it gave rise by gemmation 

 to other polyps like itself. Hence, we find that there 

 are several generations intercalated as it were between 

 the primitive scolex and the strobilge, which are 

 produced by it ; and, moreover, that these generations 

 are not always similar. It sometimes happens that 

 an individual which results from gemmation differs 

 in many respects from its parent, or is even quite 

 unlike it; just as might occur if a hairy caterpillar 

 were budded from a smooth- skinned one. In this 

 case, the first form is termed protoscolex* the second 

 deutoscolex,f and so on; Greek compounds being 

 employed to designate the numerical order of the 

 generation. J 



* Signifying first scolex. 



t Signifying second scolex. 



J Van Beneden, retaining the term scolex for the generation 

 which produces the strobila, applies in certain cases the term 

 proscolex to the race which precedes it. Hence there occasionally 

 arises some slight confusion in the description of the phenomena. 

 The simple rule which I suggest the adoption of, is merely a slight 

 modification of the Belgian naturalist's views, and does away with 

 the difficulty. M. Moulinie, in his splendid work on the Endo- 



