156 Transactions of the 



II. — Some Bemarlcs on the Finer Nerves of the Cornea. 

 By Dr. E. Klein. 



(^Read before the Royal Microscopical Society, March 6, 1872.) 



Plates XIII. and XIV. 



It is not long since that I had the opportunity to give a description 

 of the nerves of the cornea.* If I undertake to speak again on the 

 same subject, there are two reasons : first, I am able by using a new 

 method — though only a modification of the common method of 

 staining with chloride of gold — to demonstrate very easily, and 

 with great certainty, even the finest nerve fibres. 



The great advantage which this method has over the one I have 

 previously described is, that the preparations show most abundantly 

 the finer nerve fibres, and that the latter come into view very 

 sharply defined ; accordingly they can be examined with the greatest 

 ease even under a lower power, as 250 to 300, and with a small 

 amount of light. 



EXPLANATION OF PLATES XIII. AND XIV. 



Nebtes of the Cornea. 



Fig. 1. — Horizontal preparation of nerves of the proper substance of the rabbit's 

 cornea, o, coarser non-rnedullated nerve trunk, b, tmer nou-medul- 

 lated nerve fibres. X 300. 



„ 2. — Horizontal preparation of the sub-epithelial nerves of the guinea-pig's 

 cornea, a, coarser non-meduUated nerve trunks of the sub-epithelial 

 plexus, b, finer non-meduUated nerve fibres, c, finest non-meduUated 

 nerve fibres of the sub-epithelial network, x 300. 



„ 3. — Oblique section through the deeper epithelium of the anterior surface of 

 the rabbit's cornea, and the superficial layers of the jiroper substance. 

 a, coarser non-meduUated nerve trunk. 6, brushes of fine non-medul- 

 lated nerve fibres, c, fine non-medullated nerve fibres of the deep 

 intra-epitlielial network, d, deeper epithelial cells. X 300. 



„ 4. — Horizontal preparation of the rabbit's cornea, r/, coarser non-medullated 

 nerve trunks, b, fine non-medullated nerve fibres, c, brushes of finest 

 sub-epithelial nerve fibres, x 300. 



„ 5. — Horizontal preparation of the guinea-pig's cornea. Superficial intra- 

 epithelial network of fine non-medullated nerve fibres. X 300. 



„ 6. — Hc^rizontal preparation of the rabbit's cornea. Superficial intra-epithelial 

 network of fine non-medullated nerve fibres. X 300. 



„ 7. — Horizontal preparation of the frog's cornea, a, non-medullated nerves of 

 the coarser plexus of the proper substance of the coruea (nerves of the 

 first order). 6, c, and d, fine non-medullated nerve fibres (nerves of 

 the second and third order), x 300. 



„ 8. — Horizontal preparation of the frog's cornea, a, non-medullated nerve 

 trunk of the first order, b, non-medullated nerve fibres of the second 

 order, c, non-medullated nerve fibres of the third order, d, non- 

 medullated nerve fibres of the fourth order, e, corneal corpuscles. 

 /, nuclei of the same. Hartnack Immersion, Nov. 10. Copied from 

 the 'Quarterly Microscopical Journal,' October, 1871. 



' Quarteily Microscopical Journal,' October, 1871. 



