GROWTH OF THE INNER EAR OF ALBINO RAT 



159 



The growth changes in the ganglion cells of the ganglion vestibulare. 

 In table 115 (chart 43) are given the values for the diameters 

 of the cell bodies and their nuclei in the largest cells of the gang- 

 lion vestibulare. At the bottom of the last column for the cell 

 body and for the nucleus, respectively, are recorded the ratios at 

 1 to 367, 1 to 546, and 15 to 367 days. The last ratio was taken 







25 



50 



50 100 200 300 400 500 



Chart 43 The diameter of the largest cell bodies and of the nuclei from 

 the ganglion vestibulare, table 115. 



Cell bodies. -.-.-.-.-. Nuclei. 



to facilitate a comparison with the data in table 118 which begin 

 at 15 days. 



Looking at the ratios of the cell bodies and of their nuclei 

 from 1 to 546 days, it appears that the ganglion cells increase 1.2 

 in diameter, while their nuclei have only a very slight increase, 

 and therefore the ratio is 1 : 1.0. This increase in the cell bodies 

 is continuous from birth to old age, but after fifteen days is 

 very slow. In the nucleus we see a slight increase at the earlier 



