ii SENSIBILITY OF THE INTERNAL ORGANS 83 



(.&) The reticular layer of the cutis contains a great variety of 

 nerve-endings. The simplest and most superficial form is Krause's 

 end-bulb, which Dogiel described minutely, first in the conjunctiva 

 of the eye, and subsequently in the external genital organs of 

 both sexes (Fig. 30). From these more elementary forms of 

 corpuscles there is a gradual transition to other more complex 

 forms, the so-called "genital corpuscles," which Sfarneni, like 

 Dogiel, holds to be compound Krause's bulbs (Figs. 31 and 32 

 show two of the many varieties). The name of genital corpuscles 

 is morphologically a misnomer, because similar forms exist not 



FIG. 20. Clitoris of sheep. Section oblique to surface. (Sfameni.) nj"., myelinated nerve-fibre ; 

 g.r., granular reticulum ; cc, superficial cells of derma in relation with the granular reticulum. 



only in the conjunctiva, but also in the joints. From the so-called 

 genital corpuscles there is a further gradual transition to more 

 elaborate corpuscles,, more or less similar to those described by 

 Golgi and Mazzoni, and by Ruffini in the finger-tips. Lastly, 

 there are corpuscles which appear to be transitional forms between 

 Golgi -Mazzoni corpuscles and Pacini's corpuscles. These are 

 largely represented in the female genital organs. 



(c) There are comparatively few nerve-endings in the loose 

 subcutaneous tissue. Ruffini's end-organs are present in various 

 forms (Figs. 33 and 34), also Pacini's classical corpuscles (Fig. 14) 

 and other related forms, such as the Golgi-Mazzoni corpuscles, 

 which here are usually smaller than those shown in Figs. 

 10, 11, 12. 



