CUTANEOUS SENSIBILITY 



23 



lated tissue and a central core penetrated by the medullated fibre, 

 which runs through it direct to the end, where it branches and 

 ends in an enlargement. 



Between the largest Pacinian corpuscles, that are plainly visible 

 to the naked eye, and those of Golgi-Mazzoni, which can only be 

 detected with the microscope, there is an uninterrupted series of 

 intermediate or transitional forms. One very rare variety of 

 Pacinian corpuscle found in subcutaneous tissue consists of small 

 spherical corpuscles with an inner core which is also spherical, 

 and nerve-endings represented by a cluster of bulbs (Fig. 15). 



FIG. 12. Golgi-Mazzoni corpuscle. (Ore- 

 vatin.) Besides the rnyelinated nerve- 

 fibre, a fine non - myelinated fibre 

 penetrates into the corpuscle and forms 

 a network in the capsule, as described 

 by Timofeew. 



Fio. 13. Nerve of 

 middle finger with 

 Pacinian corpuscles. 

 Natural size. (Henle 

 and Kolliker.) 



The corpuscles which Euffini discovered in 1891 have in 

 common with Pacini's that they are found in approximately equal 

 numbers in subcutaneous cellular tissue, and like the Pacinian 

 bodies are of very variable dimensions. They are cylindrical and 

 spindle-shaped. A capsule consisting of a few thin lamellae 

 closely applied together can be distinguished from a supporting 

 bundle of fibrillary connective tissue and elastic fibres, between 

 which the nerve -fibres penetrate and expand in the form of a 

 non-myelinated ramification. Sometimes the nerve-fibres enter 

 laterally (Fig. 16) ; at other times they enter at one end of the 

 spindle (Fig. 17). 



Kuffini's corpuscles also present many variations. The 



