190 Veteri7ia?Y Obstetrics 



formation of multiple C3'sts, accompanied by connective tissue 

 hypertroph}- or scelerosis of the ovaries, in which a cut surface 

 reveals several Graffian follicles, very small, up to as large as a 

 pea, embedded in much firm, white connective tissue. Such 

 ovaries vary in size from that of a hickory nut to a hen's egg, 

 are firm and hard, can not be crushed, and, now and again, there 

 are still present yellow bodies. 



Contrary to the deductions of Z.schokke and Simon, we were 

 in a position 14 times during the last year to recognize with cer- 

 tainty the presence, sometimes of large, at others of small, corpora 

 lutea in cystic or cysto-fibrous degenerated ovaries, and, indeed, 

 one, two, or even three of them in one ovary, (vid. post mortem 

 findings in Nos. 2 and 3.) On the whole, there is no substantial 

 ground for the opinion that, in intermittent nymphomania in 

 cows, yellow bodies may not still be formed. 



Definite sclerosis of the ovaries {sclerosis ovarii) in which all 

 appearances of ovulation cease, such as normal Graafian follicles 

 and ix^sh. corpora hitea, never determines nymphomania, but leads, 

 according to our observations, when bilateral, to absence of 

 estrum, though, when one ovary remains normal, the animal may 

 conceive. Selerotic and cicatricially contracted ovaries are the 

 size of a hazelnut to that of a hickory nut, smooth, and of a 

 uniformly firm or hard, nodular consistence. 



3. Yet another disease of the ovaries, which, however, leads to 

 " Stillochsigkeit " or dumb estrum con.sists of the development 

 of ovarial cysts containing yellowish, sero-fibrinous, pap-like 

 fluid or of blood cysts. The first mentioned formation, which is 

 very rare, varies in size from a hen's egg to a fist and feels like a 

 sac filled with quicksilver. When these are crushed in living 

 cows a granular, thick, gravy-like mass escapes. 



4. In aged, good milk cows there occurs in rare instances, as a 

 cause of nymphomania, ovarial dropsy (hydrops ovarii). In this 

 disease the ovaries are soft, flabby and flattened. 



5. A very rare cause of nymphomia in cows, not to exceed 

 0.5 % in our clinic, so far as we could determine, is tubercular 

 ovaritis (oophoritis tuberculosa).' These cases run their course 

 with and without symptoms of nymphomania and sinking of 

 the sacro-.sciatic ligaments. 



' E. Hess, Schweizer-Archiv. fiir Tierheilkunde, 1891, page 161. 



