270 E. VICTOR SMITH 



each of which possessed one to two nucleoH. The capsular nuclei 

 varied considerably in size and shape, some were round, others 

 elongated. Outside the capsule, in the intercellular space, were 

 scattered many similar nuclei. In a teased preparation more of 

 the extra-capsular nuclei were spindle-shaped than round or ellip- 

 tical. The capsular nuclei could be traced along the processes 

 for a, considerable distance after the process left the ganglion 

 (fig. 39). 



c. The Gasserian ganglion. This ganglion of the goose is 

 very large, being 4.5 mm. long and over 3.5 mm. wide. The 

 cells are more numerous about the periphery than in the central 

 region. There is a slight tendency toward the grouping of cells 

 into rows parallel to the course of the fibers, this tendency being 

 somewhat more marked at the peripheral region than in the cen- 

 tral. The cells are not crowded in this ganglion as in the ganglia 

 of smaller birds, and are free from that irregularity of outline 

 due to pressure. 



The cells are of large size as compared with those of the chick 

 and owl. They vary in major diameter between 20 and 70 fi, 

 those of great length being usually narrower than those of 

 average length. The minor diameters vary between 18 and 

 41m- a large percentage of the cells are rounded in shape, others 

 elongated, and a small number are irregular. 



The nuclei are round to elliptical, the round ones being in the 

 rounded cells and the elliptical in those cells in which there is a 

 considerable difference between the major and the minor diame- 

 ters. The round nuclei are from 8 to 11 m in diameter, the size 

 of the nuclei varying somewhat as the size of the cell. The ellip- 

 tical nuclei are between 11 and 16 n long, and between 8 and 14 ^ 

 broad. The nuclei are usually near the center of the cell, but in 

 a few cells they were located near the walls of the cells. The 

 processes are relatively large, and, as in the cells of the vagus 

 they follow a direct course. No initial glomerulus was observed. 



The thin capsule of the cell is clearly defined, and encloses a 

 considerable space between it and the wall of the contained cell. 

 It is unlikely that this space is due to the shrinkage of the cell 

 as might be supposed in the case of the chick. The ganglia of 



