4.06 
tissue of the epiglottis (8) ; in the nuclei of capillary blood- 
vessels (9); in special bodies in the mucous membrane of the 
urinary bladder (10) ; and in structures which lie between 
the epithelial cells of the mucous membrane of the stomach of 
the frog (11); the freely outrunning nerve-fibres in the 
tissue of certain serous membranes (12) ; the termination of 
nerve-fibres in the cells of the alveoli and of the ducts of the 
salivary glands (13); in the cells of the liver (14); and 
sO on. 
In regard to a number of these nerve-endings, on the one 
hand the very opposite has been demonstrated within the 
last few years; it has been shown, that is to say, that the 
finest nerves may be followed over and beyond these so-called 
special terminal structures; while, on the other hand, the 
existence of the same in some of the tissues has been called 
in question. Thus in the nerves of the conjunctiva, in the two 
last works (15) which have appeared on the subject, no men- 
tion is made of terminal corpuscles ; on the contrary, it is 
shown that fine nerves enter into the epithelium, and ramify 
farther between its cells. In the same way it was shown that 
the nerves of common sensibility of the skin (16) may be 
followed farther towards the surface than the above-mentioned 
branched corpuscles are to be met with. In the case of the 
nerves of the tail of the tadpole, their connexion has been 
disproved both with the branched connective-tissue cells (17), 
and with the nucleoli of the epithelium (18). 
Similarly the connection of the nerves of the cornea with its 
corpuscles has been denied (19), but again maintained (20). 
In regard to the finest nerves of smooth muscular fibres, it 
was further demonstrated (21) that they do not end in the 
nucleolus, but that these nucleoli are intercalated in the intra- 
muscular network. - Finally, it was quite recently shown that 
the nerves of the mucous membrane of the vagina (22) and 
palate (23) are not furnished with terminal apparatus, but 
enter the epithelium to ramify farther within it, and to form 
networks. 
The following treatise will be occupied, first, with the 
ramifications of the fine nerves of the cornea with relation to 
the anterior epithelium, the corpuscles, and the endothelium 
of the Membrana Descemeti; secondly, with the nerves of the 
nictitating membrane of the frog with relation to the epithe- 
lium, the glands, and the blood-vessels which it contains ; 
thirdly, with the ramifications of the fine nerves in the canal 
to be found lined with ciliated epithelium in the tail of the 
rabbit ; and finally, with the nerves of the mesentery in rela- 
tion to the propria and blood-vessels of the same (see ‘ Cen- 
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