Pneumomammography is a demonstration by xrays of changes within the lactic ducts, lactic sinus, and cisterns of the udder by filling this system with air. Air was insufflated into the udder under a pressure from 5 to 120 mmHg. A pressure at 5, 20, or 40 mmHg was satisfactory for radiography. The radiograph at 5 mmHg pressure was suitable for the demonstration of the cisterns. Under pressure of 20 mmHg was demonstrated the lactic sinus. Application of pressure at 40 mmHg secured a good radiograph of the lactic ducts. There appeared to be no difference among the radiographs of the udder insufflated under pressure from 40 to 120 mmHg. The air insufflated into the udder (about 700 to 1, 000ml) was absorbed within 72 hours, and had no effect on clinical findings. Pneumomammography may be available as a guide for the examination of the udder in cows.

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The microflora of sausage containing no bactericide consisted of Streptococcus and Leuconostoc (SL), 56%; Lactobacillus, 18%; Micrococcus, 14%; Bacillus, 10%; and coryneforms, 2%, after storage of aweek. It was composed of Lactobacillus, 82%; SL, 16%; and Micrococcus, 2%, after storage of fiveweeks.
The microflora of sausage containing furyfuramideconsisted of SL, 62%; Micrococcus, 28%; and Lactobacillus, 10%. The microflora of sausage containinga mixture of nitrofurazone and nitrofurylacylate amide was composed of Bacillus, 58%; SL, 16%; Micrococcus, 14%; coryneforms, 8%; and unidentified organisms, 4%.
The coryneforms did not include Microbacterum thermosphactum.
In sausage, the antibiotic property of the furanderivative was revealed against V. parahaemolyticus most markedly and against C. perfringens, E. coli, S, aureus, and S. enteritidis in the decreasing order. It was not recognized against S. faecalis. In general. this property was displayed more distinctly in thecase of addition of furylfuramide alone than in thecase of addition of the mixture.

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[in Japanese]

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Gangrenous mastitis caused by Clostridium perfringens was observed in a three-year-old Holstein cow on a dairy farm near Obihiro, Hokkaido, It was noticed on the next day of parturition by the manifestation of marked congestion, edema, pain, discoloration, and hard sswelling of the rear quarters. Sulfonamides or antibiotics had no effect to prevent it from spreading to the other quarters. Milk secretion stopped completely and the udder became cold. The animal was slaughtered on the 5th day of illness. Autopsy revealed edema and hnmorrhage of the subcutaneous tissue, and gangrene of ehe mammary gland. There were congestion in the liver and follicular swelling in the spleen.
Gram-positive, anaerobic bacilli were isolated from three mammary quarters and a milk sample before death, and identified as Cl. perfringens by biological and cultural findings. The toxin-antitoxin reaction and the agglutination test demonstrated that they belonged to type A.

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