THE RECEPTORS AND EFFECTORS 



83 



Fig. 25. The details of the nerve-endings in a Meissner corpuscle from 

 the human skin. Only the outline of the corpuscle is shown, within which 

 the terminals of the nerve-fiber form a complex skein. (After Dogiel, from 

 Bohm-Davidoff-Huber's Histology.) 



Fig. 26. Merkel's corpuscles or tactile disks from the skin of the pig's 

 snout. The nerve-fiber, n, branches, and each division ends in an expanded 

 disk, ra, which is attached to a modified cell of the epidermis, a. The un- 

 modified cells of the epidermis are shown at c. (From Ranvier.) 



