CORTICAL cells: WILD NORWAY 



369 



ment in a given cell is not much greater. The cells are distinctly 

 smaller than in the standard Albino (Ping, '21) of like body- 

 weight but a trifle larger than those in the inbred Albino (Ping, 

 '21). The values are given in table 201. 



A comparison of size has been made between these cells in 

 the Norway and in two strains of Albinos- — the standard strain 



Diameter in micra 



10 11 12 t3 lA- IS t6 17 18 19 2.0 Zi 2.2 2.3 2A ^j. 



Chart 67 Showing the corrected average diameters of the cell body and the 

 nucleus of the cortical nerve cells of the Norway rat, plotted according to in- 

 creasing brain weight. Based on the data in table 199. Graph GC, average 

 diameter of the cell body of the ganglion cells in the lamina ganglionaris. 

 Graph GN', average diameter of the nucleus of the ganglion cells in the lamina 

 ganglionaris. Graph PC', average diameter of the cell body of the pyramids in the 

 lamina pyramidalis. Graph PN', average diameter of the nucleus of the pyramids 

 in the lamina pyramidalis. 



