io6 



HISTOLOGY. 



through the axis of the corpuscle, the others making spiral turns about 

 them before breaking up into numerous varicose branches. Tactile 

 corpuscles are found in certain of the connective tissue elevations (papillae) 

 just beneath the epidermis, being especially numerous in the soles and 



palms (23 in i sq. mm.) and at the 

 ringer tips; also "in the nipple, bor- 

 der of the eyelids, lips, glans penis 

 and clitoris." 



Genital corpuscles are large, 

 round or oval bodies 60-400 1.1 long 



FIG. 127. GENITAL CORPUSCLE FROM THE 

 GLANS PENIS OF MAN. METHYLENE 

 BLUE STAIN. (After Dogiel, from Bohm 

 and von Davidoff.) 



FIG. 128. BULBOUS CORPUSCLE FROM THE CON- 

 JUNCTIVA OF MAN. METHYLENE BLUE 

 STAIN. (After Dogiel, from Bohm and von 

 Davidoff.) 



(Fig. 127) which may receive as many as ten nerve fibers. These ramify 

 and send branches to neighboring corpuscles and also to the epidermis. 

 The genital corpuscles are deeply placed beneath the epithelium of the 

 glans penis and clitoris and the adjoining structures. 



Bulbous corpuscles [of Krause] are smaller than the genital corpuscles 

 and are most numerous (1-4 in a sq. mm.) in the superficial connective 



tissue of the glans penis and clitoris. 

 Similar structures, either round or 

 oval, are found in the conjunctiva 

 and "edge of the cornea, in the lips 

 and lining of the oral cavity, and 

 probably in other parts of the co- 

 rium." They vary in length from 20 

 to TOO ,; they have thinner capsules 

 and receive fewer nerves than the 

 genital corpuscles which they resemble (Fig. 128). The articular cor- 

 puscles, found near the joints, belong in the same category. 



Cylindrical corpuscles [cylindrical end bulbs of Krause] contain a 

 single axial nerve fiber with few or no branches, terminating in a knob-like 

 or rounded extremity (Fig. 129). The fiber is surrounded by a semifluid 



FIG. 129. CYLINDRICAL CORPUSCLES, FROM I.v- 



TERMUSCULAR SEPTUM OF CAT. METHYLENE 



BLUE STAIN. (Huber.) 



