166 



OVARY AND PAROVARIUM, BY W. WALDBYER. 



and in the adjoining figure of a sagittal (antero-posterior) 

 section of the ovary of an adult Dog. 



The ovary appears at first sight to be enclosed in a duplication 

 of the posterior lamina of the ligamentum latum, and con- 

 sequently to be invested by the serosa. The careful observer 

 may, however, perceive at the base of the organ a circular 

 white line, at which the peritoneum ceases, and the superficial 

 epithelium of the ovary, the germ-epithelium, commences. The 

 latter (compare figs. 191 and 192) is distinguished from the 



Fig. 192. 



Fig. 192 (No. 14, Plate ii., of my work on the subject, 123). Ver- 

 tical section of the ovary of six-month-old Bitch. Hartnack 2-7. a, 

 Epithelium ; 6, ovarial tube with free orifice ; c, larger groups of 

 follicles arranged in a grape-like form; e, oblique and transverse 

 sections of ovarial tubes. 



well-known flat-celled epithelium of the peritoneum, by its 

 columnar cells and darker granular appearance. The germ- 

 epithelium confers upon the ovarial surface a dull grey aspect, 

 which contrasts strongly with the bright appearance of the 

 serosa, and resembles rather that of a mucous membrane. In 

 any attempt to represent the peritoneum as a separate mem- 

 brane it must be acknowledged to be as completely interrupted 

 by the ovary as by the pavilion of the Fallopian tube. The 

 similarity of these two parts, as well as the propriety of the state- 

 ment that the investing epithelium of the ovary resembles the 

 epithelium of a mucous membrane, are clearly shown by the cir- 



