36 



OLOF LARSELL 



variation in size, the finer fibers greatly outnumbering those of 

 coarser diameter. 



The myelinated fibers are relatively few in number. They 

 usually occur in strands of three to five filaments, accompanied 



&h--^:.-,. 



she. 





Fig. 20 A bundle of fibers from near the dorsal margin of the olfactory bulb, 

 caudad to the main ganglionic mass. The strand divides centrally. Kitten two 

 weeks old. Pyridin-silver technique. X 600. 



Fig. 21 A bundle of fibers from near ventral margin of olfactory bulb in 

 about the same vertical plane as figure 20, showing relation of some of the fibers 

 to a blood-vessel. Kitten two weeks old, Pyridin-silver technique. X 600. 



