VIII. 



CONJUNCTIVA AND SCLEROTIC. 



NOTE BY PRJFESSOR STRICKER. A manuscript of Stieda on this 

 subject is in my possession. It was forwarded to me about two 

 years ago, at a time, therefore, at which the author was unacquainted 

 with the plan on which this special chapter would be treated. I have 

 lately felt that the essay in question was too brief for my purposes. 

 In order, therefore, to avoid postponing any longer the appearance of 

 the last part of this work, I have personally undertaken its expansion 

 to many times its original limits. It is consequently, to a great ex- 

 tent, only a compilation. The illustrations have been taken from 

 specimens prepared by E. Klein, and in addition I have made use, 

 besides Stieda's manuscript, and a paper written by E. Klein, of the 

 manuals of Henle, Kolliker, and Leydig, the monograph by E. Brticke, 

 and the treatises of Schmidt and Helfreich. From the last-named 

 four authors I have made literal quotations, indicated by inverted 

 commas. In regard to the nerves alone, have I, aided by a pupil, 

 introduced any original researches, which, however, as the reader will 

 discover, lead to no positive conclusions. 



Two portions of the conjunctiva may be distinguished in 

 both the upper and lower lid. One, situated nearer the margin 

 of the lid, is supported and strengthened by a firm ligamentous 

 lamina termed the tarsus, whilst the other, situated nearer to 

 the osseous margin of the orbit, possesses no such support. 

 Henle designates the one the " tarsal portion," and the other 

 the " orbital portion." 



Each of the lids is composed of an external layer of skin, of 

 an internal layer of mucous membrane, and of a median layer, 

 which contains the muscular fibres of the orbiculus palpebrarum 

 and of the tarsus. 



