170 Journal of Comparative Neurology. 



ever, to have escaped this observer at that time. In the sixth 

 edition of this well known work, Kolliker considers these end- 

 ings much more fully. His later observations may be sum- 

 marized as follows : He corroborates Golgi's statement that in 

 lizards the nerves terminating in tendon end in a dense network 

 of non-meduUated nerve branches, with here and there free end- 

 ings and occasional enlargements, but adds that ' ' diese sensiblen 

 Endblatten," as he terms these endings, consist, as do the motor 

 endings, of non-medullated fibers, surrounded by a nucleated 

 sheath of Schwann. Concerning the " Golgi schen SeJmcnspiii- 

 deln" as he terms the " Organi novosi terminali nmsado-ten- 

 dinei," in honor of their discoverer, he makes the following 

 comment : In one individual seven years old, the Golgi tendon 

 spindles were 1.28 mm. to 1.42 mm. long and 0.17 mm. to 

 0.25 mm. broad at the muscular end. In the rabbit, they were 

 0.24 mm. to 0.79 mm. long and 0.02 mm. to o. 1 1 mm. broad. 

 The Golgi tendon spindles are surrounded by a well developed 

 fibrous tissue capsule, which is continuous with the sheaths of 

 the contiguous tendon fasciculi. This capsule, he believes with 

 Cattaneo, possesses an endothelial lining. Within the capsule, 

 there are found two, three, and sometimes more tendon fasciculi, 

 at other times, as it would seem, a less differentiated mass of 

 tendon substance (eine mehr zusammenhangende Masse von 

 Sehnensubstanz). One, two, three or four medium sized med- 

 ullated nerves go to each spindle, which they reach, usually in 

 the equatorial region, but not infrequently at one end of the 

 spindle. These nerves divide into a number of medullated 

 branches and are distributed through their non-medullated ter- 

 minal branches, over the greater part of the thicker portion of 

 the spindle. KoUiker's observations on the ultimate ending of 

 the spindle nerves are in accord with those given by Golgi and 

 Cattaneo and will therefore need no farther mention. 



In a summary of observations on sensory nerve endings, 

 Kerschner mentions briefly his own observations and those of 

 other investigators on the nerve endings in tendon, giving, how- 

 ever, no figures to elucidate his text. In amphibia, he was not 

 able to add to the results obtained by RoUet and Gemt. The 



