PLATE 3 



EXPLANATION OF FIGURES 



4 Modified vater- pacinian corpuscle at the periphery of niembrana tj'mpani 

 of man. A nerve (n) is seen entering the capsule surrounded by the sheath 

 of Henie (.// ) which blends with the connective tissue of the capsule (c) . The nerve 

 as soon as it enters the capsule begins to send oflf numerous fine fibrils, which wind 

 in and out at varying depths interlacing freely among themselves. The main 

 trunk, gradually getting thinner, can be followed to near the distal end in a tor- 

 tuous course through the intricate interlacing of the fibrils. Before entering the 

 capsule the nerve has a faint medullary sheath which it loses before piercing the 

 capsule. The capsulated sheath is poorly developed, but can be easily distin- 

 guished in the orilinary preparation. It is well brought out with eosin or acid 

 fuchsin. 



5 A modifipd vater-pacinian corpuscle. A fiber (r?) with at first a faint 

 medullary sheath runs into the thin capsulated ending. The breaking up is by 

 dichotomous divisions; the first division takes place about one-fourth of the length 

 of the ending from its proximal part. The numerous rami freely interlace and 

 finally end as fine bu]l)()us points, apparently just under the capsule. The form 

 of the ending is long and spindle shaped. It is divided into two nearly equal parts 

 by a connect ive tissue diaphragm (d) which passes from the inner side of the capsule. 

 The proximal half is entirely supplied by the first division of the nerve; the other 

 half is distributed to the distal half. From the distal end a fine fibril (n') passes 

 out through (he (;af)sule to end, after dividing, in the sub-epit hiMial tissue. 



6 Sensor}' endings in the epithelium of the membrana tympani of man. 

 Several non-medullatc(l nerves, some. of which can be followed for a considerable 

 distance in the sub-epithelial plexus, run between the deeper layers of the epi- 

 thelial cells on the external surface of the membrana tympani, interlacing and 

 forming an intra-epithelial plexus from which branches go to the surface as fine 

 or bulb-shaped points. Zeiss comp. oc. 4, obj. 2 mm. 



