“Pernet A, ” a permanent magnetic bar, is placed in the reticulum through the mouth for the prevention and treatment of traumatic gastritis, gastrophrenitis, pericarditis, and hepatitis and other diseases caused by the presence of metallic objects in the body. In principle, it is allowed to stay in the reticulum permanently. Experience shows that there have been no disturbances in cows with Pernet A in the stomach. It seems to be an ideal method to administer the magnetic bar to calves when they reached six months of age.
Sometimes the magnetic bar attracts too many metallic pieces to display its magnetism. In such case, it must be taken out of the stomach and freed of those pieces. Then it can be inserted again into the stomach. The method of removing the magnetic bar from the stomach is described in the text in detail

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ニワトリにスルフイソメゾールナトリウムおよびスルフイソミジンナトリウムを100mg/kg経口的に投与して経時的に血中濃度と体組織各部の分布を測定した結果つぎの成績を得た.
1) スルフイソメゾールナトリウムを投与するとき, 血中濃度は投与後1時間でほぼ10mg%の水準に達し, 8時間後までほぼこの水準を維持し, 12時間後には減少をはじめ, 24時間後もなお血中での存在を確認できた. スルフイソミジンナトリウムを投与したときは, 投与後1時間で, ほぼ3.5mg%に達し, 4時間後までほぼ同じ水準を示すが, 6時間後には減少をはじめ, 8時間後には痕跡となり, 12時間以後では全く血中での存在を確認できなかった.
2) スルフイソメゾールナトリウムを投与したときの体内各種組織内分布は脳に, もっとも少なく, 消化器系の臓器がこれに続き, つぎに肝臓および肺, 気管の呼吸器官となり, 腎臓, 味嚢にもっとも多い分布を示した.

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1. A total of 317 serum samples were collected from apparently healthy hogs slaughtered at the Shibaura Slaughterhouse in Tokyo. Of them, 17 per cent gave positive complement fixation tests with a titer of at least 1: 8 after treatment with KIO₄. About 80 per cent of these positive serum samples also gave positive dye teste with a titer of at least 1: 16.
2. Positive toxoplasmin intradermal tests were given by 7.7 per cent of 261 hogs slaughtered. Toxoplasma organisms were isolated in mice from 2 of 2 positive hogs and 2 of 43 negative hogs examined.
3. Epidemiological surveys were conducted on the workers of the same slaughterhouse in 1960 and 1961, by using the toxoplasmin intradermal test and dye test. As a result, positive toxoplasmin and dye tests were given by 67.8 and 59.1 per cent, respectively, in 1960 and 57.4 and 61.8 per cent in 1961.
These surveys indicate that toxoplasmosis has been spread among swine in Japan to a considerably large extent and that swine play an important part in the transmission of this disease to man.

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