266 



DETAILED SYNTHESIS. 



rapidly they change nor how great is their requirement 

 for nutrition. From the small number of Blood-tubes 



FIG. 185 



Fig. 185 represents front, side, and under view of brain, front view of 

 cord and nerves leading from it, the large branches being correctly, the 

 small ones ideally, drawn. Fig. 186 shows the end of a finger, natural 

 size, the nerves enlarged. Fig. 187, a front view of the brain-cord and 

 roots of nerves enclosed in the membranes of the cranio-spinal cavities, 



