REPRODUCTION IN THE DOMESTIC FOWL. 277 



running parallel to the median line and ventral and lateral to the 

 ureter. This tube was nearly straight throughout its course, but 

 had a few convolutions near the cloacal end. It had the posi- 

 tion and appearance of a normal vas deferens in a young cockerel. 

 The tube was heavy walled and gradually increased in diameter 

 caudad. Sections showed that this duct had a definite lumen. 

 There was no enlargement comparable to a seminal vesicle. It 

 was not possible to demonstrate an opening into the cloaca. 



HISTOLOGY OF THE LEFT GENITAL GLAND (OVARY). 



The left genital gland was much less finely lobulated than a 

 normal ovary. The large lobules had smooth contours. The 

 organ was covered with a layer of peritoneum. Over most of 

 the surface the cells of this layer were nearly cubical but in some 

 portions they were shorter than broad while in other regions they 

 were nearly twice as tall as broad. Over a few small areas there 

 was an outward proliferation of this epithelium so that evaginated 

 folds of the epithelium four to six cells deep projected from the 

 surface. In a few cases these evaginated ridges were still further 

 folded along their lateral margins. 



Beneath the peritoneal layer was the tissue which formed the 

 bulk of the organ. This was a highly cellular but much vacuo- 

 lated tissue, the cells of which were not unlike the cells of the 

 stroma of a young ovary. This tissue was nearly uniform 

 throughout the organ. In the vacuoles of this tissue were found, 

 in many portions of the organ, irregular non-cellular masses 

 which stained deeply with acid stains, especially eosin. Some of 

 these masses were surrounded by a single layer of very much 

 flattened cells. They did not appear like ova nor did the sur- 

 rounding cells resemble normal follicle cells. In the part of 

 the organ ventral to the suprarenal body were a few spherical 

 portions of the stroma-like tissue which were more dense and 

 took a deeper stain with haematoxylin. These portions did not 

 differ in other particulars from the surrounding tissue. 



The stroma-like tissue contained few blood vessels but a 

 highly vascular connective tissue penetrated the organ from the 

 stalk. This tissue appeared like a core to the organ projecting 

 into the larger lobules in tongue-shaped masses. 



