ON THE CELL 



301 



Cell life is enjoyed, in common, by the unicellular 

 organism, if we may call it so, the multicellular creature, 

 vegetable, and animal, the limbed, and voluntarily moving, 

 being, and the erect, and thinking, man, himself, but how 

 unlike in character, and degree, is that life enjoyed ! 

 Life, as thus enjoyed, is dependent on the existence of a 

 nervous system, which initiates, controls, and maintains, 

 all vital processes, evolving, and distributing, vital energy, 

 securing the persistence of living forms, and evolving 



FIG. 124. 



FIG. 124. THREE CELLS FROM EARLY EMBRYO OF THE CAT. Highly 

 magnified. (E. A. S.) 



b, protoplasm ; c, nucleus with nucleolus. The lowermost cell has tsvo nuclei. 



FIG. 125. OVUM OF THE CAT. Highly magnified. Semi-diagrammatic. 

 (E. A. S.) 



zp, zona pellucida ; vf, vitellus ; gv^ germinal vesicle ; gs, germinal spot. 



higher, and higher, types, which culminate in the appear- 

 ance of rational beings, and the introduction into the 

 guidance of the evolutionary process, of the high, intel- 

 lectual, and moral attributes which make for the elimination 

 of pain, and suffering, and result in the substitution of the 

 reign of " faith, hope, and charity." The nervous system, 

 in the unicellular organism, pervades the protoplasm of 

 that cell, determines the character of its life-work, and 

 is limited within its containing wall. The nervous 

 system, in the multicellular creature, however, undergoes 

 a great modification, and becomes, for the first time in 



