208 TWENTIETH LECTURE. 



conjunctiva corneas. Ascending perpendicularly, and rami- 

 fying once more, they finally disappear in the most superfi- 

 cial layers of flattened cells (Fig 36, d, e,f). 



We have no certain knowledge concerning the termination 

 of the nerves of glandular organs. That the secretion of 

 the submaxillary gland is very dependent on nervous influ- 

 ence (p. 140J, is an old physiological experience. What 

 Pflueger has communicated concerning the salivary glands 

 and the liver has not been confirmed. Other statements of 

 Krause's must likewise be more accurately tested. 



Passing now to the sensory nerves, we meet with three dif- 

 ferent conditions : 



a. A portion of the same run out into considerable, and 

 in part, right complicated larger or large structures. 



b. Others have their termination in the small corpuscles of 

 the epithelium. 



c. The higher nerves of sense, finally, pass into quite pecu- 

 liar specific cellular elements, so-called " sensory cells." 



We discuss directly the first two terminations. The third 

 and last we shall have to mention at the organs of sense, at 

 the close of these lectures. 



The larger terminal apparatuses of the sensory nerves 

 are : 



1. Krause's terminal bulbs. 2. The Pacinian corpuscles. 

 3. The Wagner-Meissner's tactile bodies. 



Let us commence with the first. The terminal bulbs, dis- 

 covered by Krause, are of isolated occurrence, and are not 

 easy to find in the unpropitious tissue of the mucous mem- 

 brane ; they are by no means favorites of the histologists. 

 For years, only Koelliker and myself maintained their exist- 

 ence, which was at that time doubted even by Arnold. Wal- 

 deyer, an excellent investigator, recently declared to us that 

 he had also been unable to find them. I have seen them 

 in the calf, but have not had a sufficiency of human autop- 

 sies. 



According to Krause, the terminal bulbs occur in the con- 

 junctiva bulbi, in the mucous membrane of the floor of the 



