NERVOUS SYSTEM 



41 



In addition the observations of Rivas, University of Pennsyl- 

 vania (MS '14) are given in table 19. The data are arranged 

 according to the increasing haemoglobin content. 



For the wandering cells we have tables 20 and 21 by Kan- 

 thack and Hardy, 1894. 



TABLE 20 



Showing the percentage and size of the various forms of the wandering cells of the 



blood in the rat 



TABLE 21 



(From the same authors) 



Shows the percentage and size of various forms of the wandering cells in the peritoneal 



fluid of the rat 



Basophile cells in connective tissue 23 v in diameter. 



6. Nervous system, a) Central. 1) Brain. Specific gravity 

 1.050-1.056, Reichardt ('06). For brain weight see Chapter 7, 

 p. 90, and table 68. For the percentage of water see Chapter 8, 

 p. 176 and table 74. For the chemical composition see Chapter 

 9, p. 181 and tables 80, 81. Cell division in the central nervous 

 system continues after birth. The observations of Hamilton 

 ('01) are given in table 22. 



