Bacterial endcarditis caused by streptococci has frequently been seen among swine examined in slaughterhouses. The authors encountered 21 swine cases of streptococcal endocarditis over a period from Apil, 1968, to March, 1970. They isolated α-type streptococci from 10 cases, β-type ones from 5 cases, and γ-type ones from 4 cases. Two types, α and β, were isolated from 1 case. One case could not be assorted.
Two cases of endocarditis were proved to have been caused by mixed infection with streptococci and other pus-forming organisms.

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Some of the pigs introduced into the Shibaura Abattoir, Tokyo, from Nagano Prefecture on July 17, 1969, presented many irregularly round nodules of miliary or egg size scattered on the surface of peritoneal organs, including diaphragm, liver, gallbladder, omentum, colon, prostate, and ureteral muscle. Histopathologically, these nodules were composed of tissue similar to the testicular one, but contained no spermatids. It was demonstrated that hormone had been secreted from them.
The cause of formation of these nodules was studied and proved to be the transplantation of such free testicular tissue as appearing after the performance of non-sanguineous castration by the ball masher method of Miyazawa.

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Discoloration of hair, or white guard hair, has been prevailing in a district of Hyogo Prefecture noted or its production of indigenous Japanese cattle. It has occurred during a season from early fall to winter n this district. Strange to say, it has disappeared soon after the affected cattle were transferred to any other district. An etiological survey was conducted with the following results.
1. White guard hair appeared on the side of the neck, around the eyes, or all over the body. Affected animals became thin, but were free from such symptoms of molybdenum poisoning as lameness and diarrhea.
2. The Mo level was high (11.2 γ/dl on the average) in blood. The Cu level was low (53.2 γ/dl on the average) in serum. The former was low in summer and high in winter, but the latter showed a reverse tendency.
3. The Cu/Mo ratio was 2.4 for wild grasses given in summer and 0.88 for rice straw fed in winter.
4. Calves with white guard hair were treated with a daily dose of 0.5-1.0g of copper sulfate at 2days' intervals. The white hair was found to be replaced by a dark brown one in 40days. In conclusion, this type of discoloration of hair was presumed to be induced by complicated copper deficiency.

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