14S Cells; or, Evolution. 



epithelial scale of man's organism, and that from 

 which the nerve cells of his brain are to be evolved. 

 1 [ence you see that since the first germ from which 

 any organism springs, no matter how humble or 

 how elevated, whether it is to be of one cell or of 

 many cells, simple or highly complex, is just like the 

 first germ from which any other organism, whether 

 plant or animal, arises, it is not strange if, in their 

 primary stages, all organisms are indistinguishable 

 from one another. Yet strange inferences have 

 been drawn from this very plain fact, as we shall see 

 later on (No. 191). 



163. You see too how a new form can be given 

 to the old axiom; and, instead of putting it otmie 



vivitm ex vivo, it may be changed into 

 "liui omnc vivum ex eellula. Biology, 111 the 



last analysis, becomes now a study of 

 cells. And, in its highest synthesis, it remains 

 largely a study of cells; for the living being consists 

 in its entirety only of these same elements, diversely 

 modified for diverse functions, and so constituting 

 various organs. The description then of all life, as 

 viewed from this material side of the element which 

 goes to compose it; which is assumed from the 

 pabulum or food, is developed for a special work 

 elsewhere, and then is worn out as effete; may be 

 comprised in still another shape of the same for- 

 mula; which now becomes, omnis eellula ex eellula, 

 "cell from cell." 



164. The embryo which begins even the highest 



