454 CONJUNCTIVA AND SCLEROTIC. 



names ' terminal bulbs/ and in which he recognizes a connective- 

 tissue sheath, with nuclei, an internal bulb of finely granular, 

 dull-shining material, and in the interior of this a pale terminal 

 fibre, with a somewhat bulbous thickened end. Krause was 

 successful in discovering these terminal bodies in Man, but in 

 only a few animals, as in the Horse, Ox, Sheep, and Pig. In 

 these animals their number was also proportionately small, and 

 their distribution highly dissimilar and irregular. He observes 

 that in some instances not one of these terminal apparatuses 

 can be discovered over a considerable extent of surface, whilst in 

 others they may be found accumulated in large numbers, closely 

 aggregated upon a few fibres radiating from a common centre. 

 On account of their variations, no attempt was made to obtain 

 their precise number, though on a rough estimate he concluded 

 that, in the various animals, as in Man, the number of terminal 

 bulbs present in the connective tissue appeared to be the same, 

 and that consequently there was as remarkably small a total 

 number of nervous terminal apparatus in the conjunctiva as 

 in the skin of the last phalanges of the fingers. The form 



, presented by the terminal bulbs varies in Man, as well as in 

 different animals. In the former, as in the Quadrumana, they 



. are rounded or almost spheroidal ; in other animals they have 

 in general a more elongated, oval, or even well-marked cylindrical 

 contour, and they are then either straight or slightly bent. In 

 regard to their dimensions, he states that they usually stand in 

 direct proportion to the size of the animal, and that they also 

 increase to some extent with the growth of the body, since, 

 though they present the same characters in young animals as 

 in old, they are of somewhat smaller size. In regard to their 

 minute anatomy, the sheaths of the terminal bulbs consist of 

 delicate connective tissue, which is continuous with the neuri- 

 lemma of the entering doubly contoured fibre, and in which 

 are scattered numerous for the most part elongated nuclei. The 

 internal bulb, which is the chief constituent of the whole organ, 

 is finely granular; and the terminal fibre, which is the extremity 

 of the doubly contoured fibril, is imbedded in its substance. At 

 its distal extremity it exhibits a slight bulbous enlargement, 

 and usually ends at some distance from the anterior boundary 

 of the internal bulb. In Man, several terminal fibres are 



