100 



ANATOMY 



On the basis of these observations, formula (14 a) was devised 

 for computing the diameter of the nucleus from the diameter 

 of the cell body. 



For a comparison with the data in table 60 see data in table 

 59 obtained by a different method of fixation. 



TABLE 58 

 Total number of fibers in all the spinal nerves of one (left) side Mus rattus 



TABLE 59 



TABLE 60 



Further studies on the spinal roots and ganglia were made by 

 Hatai ('02) and ('03 b). 



From a series of male Albinos the spinal ganglia with accom- 

 panying dorsal root nerves were fixed hi one per cent osmic acid 

 and cut in paraffin. The measurements on this material (Hatai, 

 '02) are given in table 61. Incorporated in the same table 



