AN important contribution to the problem of hybridization. The author has made use of his wide knowledge of the rabbit to throw light on the reputed hare-rabbit hybrids and has gathered evidence which would appear to be conclusive. An introduction, in which the author has brought together the most...

EXPERIMENTS were made in a district of Hessen which is seriously affected by Trichomonas infection. Sperm was collected in the artificial vagina and inseminated into 98 cows. 78 were clearly on heat and 72 of them became pregnant; the 20 that did not exhibit heat failed to conceive.

I & II. Sterility in mares is generally the result of metritis. In the study of the onset of urogenital disorder, it is essential to differentiate between early symptoms of disease and of oestrum. The appearance of the genital tract during oestrum is described. When infection is suspected, it is...

I & II. Sterility in mares is generally the result of metritis. In the study of the onset of urogenital disorder, it is essential to differentiate between early symptoms of disease and of oestrum. The appearance of the genital tract during oestrum is described. When infection is suspected, it is...

THE author is of the opinion that the use of biological methods of pregnancy diagnosis provides evidence for incompetence. Although direct vaginal inspection is not considered to be detrimental, the rectal method is preferable, and an experienced observer should be able to diagnose a 6-weeks'...

A review [inparts very popular] of what is known on the subject, with a bibliography of 27 titles [German only]. The breeding season falls in January-February; another may occur in March and a belated one may be observed in July, but attempts to breed animals a second time and thus obtain two...