Alt — Glandular Structures Appertaining to the Human Eye. 195 



glands. Like these it did not take up any stain and it was 

 dissolved and totally disappeared, as soon as the specimen 

 was cleared in oil of cloves. Of course, it is not permissible 

 to conclude from this fact alone that these glands must be 

 looked upon rather as modified sebaceous than as modified 

 sudoriferous glands. Still, I think this point is worth men- 

 tioning. Neither does it seem very apparent, what role a 

 watery secretion should play, when mixed with the fatty secre- 

 tion of the sebaceous glands of the eyelashes. Furthermore, 

 a watery secretion in this region would very likely lead to 

 the overflow of the tears at the lidmargin, which is evidently 

 not the case. 



THE CARUNCULA LACRYMALIS AND THE GLANDS SITUATED IN 



ITS TISSUE. 



The little rounded body of tissue lying at the nasal can- 

 thus between and slightly backwards from the folds coming 

 from the upper and lower eyelids, which is called the lacry- 

 mal caruncle, consists to a large extent of glandular tissue and 

 bears some small hairs on its surface. 



In vertical, as well as in horizontal sections through this 

 body, I find usually three larger sebaceous glands which, 

 except in their smallness, differ in no particular from the 

 Meibomian glands of the eyelids. They have the same cen- 

 tral duct and the same acini, only in a more compact arrange- 

 ment (Fig. 47). 



Now and then one or two of the so-called modified sweat- 

 glands are found between them, lying usually in the center 

 of the body of the caruncle. They differ from those found 

 in the tissue of the lidmargin only by being smaller and 

 shorter. 



With much more regularity, indeed, almost as a rule, I find 

 one, and quite often two, small glandular bodies of the acinous 

 type situated in the lacrymal caruncle (Figs. 47 to 50). 

 One of these usually lies near the upper and the other nearer 

 the lower edge of the caruncle. They differ in their struc- 

 ture in no way from the acinous glands found in the con- 

 junctiva and eyelids, and are, therefore, probably little lacry- 

 mal glands like these. At least they do not react differently 



