610 STATE BOARD OF AGRICULTURE. 



twenty or even more in others. In places these groups of vessels are within a 

 small fraction of a mm. of the surface. In this case the sub-epithehal tissue 

 is densely packed with leucocytes and endothelial cells, the zone being shallow 

 or deep depending upon the proximity of a group of blood vessels to the 

 surface. 



The mucosa of the right horn averages about four mm. in thickness and is 

 covered by a simple epithelium more uniformly stained than is that of the 

 left horn. There is a leucocytic infiltration of the stroma but less marked 

 than in the left horn. There is also a diffuse fibrosis, more marked toward 

 the surface. 



Case No. 28 



History and Clinical Examination: Case 28, aborted a six months old 

 fetus November 1. 1919 and, on account of not being a very valuable animal 

 and the desire of the owner to get her out of the herd, was killed on November 

 11, 1919. 



Macroscopic Examination: The right (post pregnant) uterine horn is 

 about three times the size of the left horn, the latter about twice the size and 

 length of a normal non-pregnant horn. The right ovary contains a grayish 

 yellow corpus luteum five mm. in diameter. The left ovary contains a bright 

 yellow corpus luteum five mm. in diameter in the center of which is a small 

 hemorrhagic area. The left ovary also contains a cyst-like structure twelve 

 mm, in diameter and three or four smaller ones. The external os is open and 

 the cervical mucosa is only slightly injected with a few scattered petechiae. 

 The uterine cavity contains about two hundred and fifty cc. of a purulent 

 exudate, distributed throughout the body and both horns. The gland mucosa 

 is only moderately congested and there are present numerous small grayish 

 white slightly raised circular areas varying in size from one half to one mm. 

 in diameter in the center of which is a slight depression. These are appar- 

 ently the swollen ducts of the uterine glands. The intervening gland mucosa 

 consists of narrow interlacing areas of a more pinkish color. The cotyledons 

 vary in size from twelve to thirty mm. in their longest diameter. They are 

 of a yellowish gray but not uniform color. There are scattered quite thickly 

 over the entire surface of the cotyledon small grayish yellow irregularly shaped 

 areas. Some of these are circular and about the size of a pin point, others are 

 elongated and average about one mm. in diameter. These are probably the 

 swollen orifices of the crypts. 



A cultural examination was not made of the exudate in this case but exami- 

 nation of stained smears demonstrated the presence of a streptococcus and 

 a short small rod resembling the abortion bacillus. 



Histological Examination: The epithelium of the cervix shows some, but 

 not marked, mucoid changes. In places numerous leucocytes are seen passing 

 through the epithelium. There is not a diffuse leucocytic infiltration of the 

 sub-epithelial tissue but there are numerous foci of densely infiltrated areas. 

 Here lymphocytes predominate but numerous plasma cells are seen. A few 

 more deeply seat-foci of leucocytes are seen in the mucosa. Some hyaline 

 degeneration of the muscularis is seen. 



The gland mucosa of the body and right horn averages three to four mm. in 

 thickness. The epithelium is denuded in most places but where present it 

 varies from eight to twenty-four microns in height. In a few places it is observed 

 that the epithelium is necrotic. In others there is evidence of regeneration of 

 the epithelium. There are a few local areas of a superficial necrosis of the stroma 



