EXPEULAIENT STATION REPORTS. 



aoi 



is ioiii' coiitiuu'lcMs ill U'liiilli, niul the wall is ahiutiiually (liiii. Tlio 

 imicosa is iiiol Hod, of a ^laycv color iliaii uornial and in phucs llic uiulcr- 

 lyinn vascular network can be easily seen. No cotyledons can be seen, 

 'ilie nincosa of left horn is similar in appt-araiu'e to that of body only 

 here a few cotyledons are present vnryinn in si/.e from three to six milli- 

 meters in diameter. The thinninj;- of the wall of this horn is very notice- 

 able. lOxternally, the size of horn is apparently one-half that of rii;ht. 

 There is a small cpiantity of a lloccnlent serous llnid in riulii horn. 4Mie 

 nincosa is o\' a j^rayei- color than normal and the cotyledons are six to 

 nine iiiillinieters in si/e. IMieir color is a inottbHl i;rayish yellow and 

 simulate the appearance of a lotyledon in th(> latter sta«;es of iiiv(dution. 

 Near the middle of.riuhl horn is an ari'a about live t'entinieleis in diam- 

 et(>r, the wall of which is not iiiori' than three millimetiMs thick. In the 

 center of this an'a is a radiating, scar. The left ovary contains four 

 cysts the largest (»f which is about two and one-half centimeters in 

 diameter. The riiihl ov:iry contains two cysts, the larger of Avliich is 

 about two centimeters in dianu^ter. Cultures from the surface of nteriiu^ 

 mucosa were sterile. 1>. coli conimuniiM' was oblaiued froin the deeper 

 layers. 



Jlistological examination: The mucosa of uterine body >aries in 

 thickness from ihrce-tenths to eight-tenths of a miHimeter and is cov- 

 ei-i'd by an epithelium averaging about sixteen microns in height. The 

 snb-ei)ithelial cellular zone is iu)t distinct and the entire stroma is mori» 

 densely librous than normal. The ratio of glands to inter glandular 

 tissue is ai)pareiilly normal. A few of the more deeply sealed glands 

 show alrojihic ej>itlieliuiii and tluM-e are others that show some degenera- 

 tive changes of the epithelium with small round cell inlillration of the 

 gland luminae. The mucosa of the left horn varies in thickness U-o\\\ 

 tive-tenths to <uie and one-fonrlli millimeters and is covered by an 

 epithelinm twi'hc to sixteen microns high. The uttM'ine wall varies 

 from two to ten millinieters in Ihickncss. i'Mbrosis of the stroma is nitu-e 

 or less general bill varies in exteni in dilVerenl jiorlions. At places it 

 is slight ill olliers it is maiked and has irsnlted in atrophic thinning of 

 the mucosa. The condition of the uterine glands als(» varies. In some 

 places lliey nre apjiareiilly normal, in others there are degenerative 

 changes of the glandular epithelium with small round cell inlillration 

 and ill still others there are glands with atrophic epithelium. The mu- 

 cosa of the right luu'ii varies in thickness from eight ttniths to two inilli- 

 melers. ^Phe glandular changes are similar to those of the left horn. 

 There is a more ov less general librosis of the stroma but uol to the ex- 

 tent seen in the left horn. 



Case IM!. (inerusey «'ow about eight years old. As a heifer she was 

 bred sexcral times before conceiving and calvetl normally in the spring of 

 mil. Her second calf was aborted at about f(Uir months in the fall «>f 

 l!ll I. She calved noinially again in the fall of IIMT) and has been bred 

 irregularly since then with failure to c(»iiceive, at least abortion has not 

 been observed. Cow was slaughtered March -',\, I'.Hil. 



Macroscopic exaniinal ion : There is a yellowish iiinco pnnilenl exudate 

 ill \agiiia and exienial os. In tiie lloor of the vagina there is a ninlti- 

 locnlar cyst live: ceiiliiiielers long, (Uie and one half ccniinielers wide by 

 six niillimelers high. lOxlernally, (here is no enlargemenl of the nieriis. 

 The exlcrnal os is closed, cervical canal nine cenlimelers in leiiglh. The 



