128 DR. KLEIN. 



cells whicli we mentioned as being found in tlie nerve- 

 trunks. 



But in serum preparations and also in those treated with 

 dilute acetic acid we can see that most of the pale fibres 

 pass into a coarse network, in many places widened out into a 

 plate-like formation, in whose oblong or rounded meshes the 

 deep epithelial cells lie imbedded. Whether this network 

 becomes identified with the intercellular substance of the 

 superficial cylindrical cells, or whether it is connected with 

 these cells themselves, as has been described by Exner (38) 

 in the pituitary membrane of the frog, I am not yet in a posi- 

 tion to determine. 



As regards the relations of the network of pale fibres, I 

 must refer the reader to figs. 4 a, and 4 B. 



Titles of Works and Papers referred to in t'ne foregoing 



Memoir. 



1. Langerhans, 'Virchow's Archiv/ Bd. xliv. 



2. ' Kolliker's Gewebelehre,' ler Theil., pp. 103—105. 

 Bense, ' Zeitschrift f. Rat. Medicin,' xxxii. 



3. Klebs, 'Virchow's Archiv,' Bd. xxxii, 1865, p. 168. 

 Fx-ankenhauser, ' Die Nerven der Gebarniutter,' &c., 1S67. 



4. Cohnheiin, ' Med. Centralblatt,' 1866, No. 26 ; and 'Virchow's Archiv,' 



Bd. xxxviii. 

 S.Kiihne, 'Gazette Hebdom.,' tome ix, Paris, 1862; aud 'Untersuch- 

 ungen iiber das Protoplasma,' Leipzig, 1864. 



6. Hensen, 'Max Schultze's Archiv,' Bd. iv, p. 3. 



7. Eberth, 'Schultze's Archiv,' Bd. ii, Heft 5. 



8. Linderaann, 'Henle und Pfeufer's Zeitschrift,' Bd. xxxvi. 



9. Tomsa, 'Med. Centralblatt,' 1869, No. 36. 



10. Lavdowsky, 'Med. Centralblatt,' 1871, No. 3. 



11. Triitschel, ' Med. Centralblatt,' 1870, No. 8. 



12. Cyon, ' Leipzig Physiolog. Arbeiten,' 1868. 



13. Pfliiger, 'Schultze's Archiv,' Bd. v, 1866; and ' Strieker's Handbuch 



der Histologic,' cap. xiv. 



14. Pfliiger, 'Pfl.'s Archiv,' Bd. ii, p. 190. 



15. Helfreich, 'Die Nerven der Conjunctiva und Sclera,' Wiirzburg. 

 Morano, 'Med. Centralblatt,' 1871, No. 15. 



16. Podkopaeff, ' Schultze's Archiv,' Bd. v. 

 Eberth, ' Schultze's Archiv,' Bd. vi. 



17. Hensen, 1. c. 



E. Klein, ' Sitzungsberichte der Wiener Akad. der Wiss.,' May, 1870. 



18. E. Klein, 1. c. 



19. Samisch, 'Beitrage zur Anatomic des Auges,' Leipzig, 1862. 

 Enselmann, 'Horuhaut,' Leipzig, 1867. 



K611iker, ' Gewebelehre,' Bd. ii, 1867. 



20. Lippmann, Inaugural Dissertation, Berlin, 1869. 



21. Arnold, ' Strieker's Histologic,' cap. iv. 



22. Chrschtschonovitsch, ' Sitzungsberichte der Wiener Akad. der Wiss.,' 



Bd. Ixiii, Feb., 1871. 



23. Elin, ' Schultze's Archiv,' Bd. vii. Heft 4. 



