224 SPECIAL HISTOLOGY. 



glands, I would remark that I have never failed in finding them, 

 10 — 50 and more, in number, on the inner lamella of the 

 prepuce, especially in the neighbourhood of the frenulum, and 

 its anterior part ; while on the glans itself and its neck, they 

 are sometimes totally absent, sometimes they occur on its 

 anterior surface, and then generally in great numbers (up to 

 100). On the prepuce, the glands are for the most part 

 racemose, in the penis more simple. Their contents exactly 

 resemble those of the sebaceous glands, viz. cells containing 

 fat, of which more will be said below. 



The sebaceous glands of the external sexual organs in the 

 female, are found, generally in great numbers, on the inner and 

 outer surface of the labia minora, and some of them are as 

 large as those belonging to the fine hairs on the labia majora, 

 while some are smaller. I have never found sebaceous glands 

 in the glans and inner lamella of the pneputium clitoridis, 

 although Burkhardt speaks of such in the corona clitoridis, 

 but, in a few instances, I have met with them about the urethra 

 and the entrance of the vagina. Resembling the sebaceous 

 glands in all essential points, except their larger size, are the 

 Meibomian glands in the eyelids, of which a more particular 

 description will be given when we treat of the eye. 



According to E. H. Weber (Froriep, 'Xotiz./ Marz, 1849), 

 the smegma preputii of the Beaver, the ' Castor/ is not, in the 

 main, a glandular secretion, since only a small portion of the 

 pouch in which it is secreted is furnished with very simple, 

 rounded, lenticular glandules, the largest measuring i"'. The 

 secretion, in individuals of both sexes, may rather be described 

 as a laminated substance lining the entire ' castor-pouch/ and 

 consisting merely of epidermic-cells and minute fatty globules. 

 Leydig ('Zeitsch. f. w. Zool./ Bd. II, pp. 22, 31, et seq.), finds 

 no glands at all in the 'castor-pouch ;' and according to him, 

 the same is the case in the preputial sac of the Weasel, whilst 

 in the Rat and Mouse, the prepuce contains true sebaceous 

 glands of a complicated structure 



§74. 



The minute structure of the sebaceous glands may be 

 described as follows : — Each gland possesses an external deli- 

 cate coat of connective tissue, continued from the hair-sac, or, 



