HuBER, Sympathetic Nervous System. 1 1 1 



essential structural dififerences. The fibrillae of the peri-cellular 

 baskets are as a rule very varicose, and often present quite 

 large nodular enlargements. In a, of Fig. 8, a cell body of a 

 sympathetic ganglion cell with peri-cellular baskets, from a 

 sympathetic ganglion of a dog, is reproduced. 



It would seem that now and then a large number of fibers 

 take part in the formation of such baskets. Sala (23) describes 

 small bundles of nerve fibers, which in their course give off one 

 or several fine branches, which take part in the formation of 

 such baskets. This condition has not been met with by me. 

 Aronson (pj) states that the nerve fibers are often wound spir- 

 ally about the neuraxis of the ganglion cell, before breaking up 

 into the baskets. I have seen this only a very few times in 

 mammalia, and believe it not to be as common as Aronson's 

 account would lead one to infer. In all mammalia studied these 

 peri-cellular baskets have essentially the same structure and, as 

 already stated, have been found in nearly all sympathetic gang- 

 lia. In the ganglia of the chain they have been repeatedly de- 

 scribed. They were seen by KoUiker and Michel (74) in the 

 ciliary ganglion of the cat ; by Lenhossek (24) in the spheno- 

 palatine ganglion of the mouse ; by me (62) in the sublingual 

 and the submaxillary ganglion of the dog ; by Aronson {6^) in 

 the cardiac ganglia of the rabbit ; by Arnstein (36) in the sym- 

 pathetic ganglia of the trachea and bronchi ; by Dogiel (35) in 

 the ganglia of the intestinal canal ; by Timofiew (75) in the 

 sympathetic ganglia of the epididymis. They have further 

 been seen by me in the sympathetic ganglia of the bladder and 

 prostate of the cat, and in those of the cesophagus of the cat 

 and rabbit. It would therefore seem safe to assume, that these 

 structures are found in all the sympathetic ganglia of the mam- 

 malia.. 



That these peri-cellular baskets are the mode of ending of 

 many of the medullated fibers in the sympathetic ganglia there 

 can be no doubt, the medullated fibers losing their sheath 

 of myelin at a variable distance from the baskets, the neuraxes 

 continuing as varicose non-meduUated fibers. Van Gehuchten 

 (21), Dogiel (25) and Kolliker (34) have shown that many of 



