488 EXPEEIMENT STATION EECOKD. [Vol.35 



method employed, cultures made use of, the heat resistance, and the significance 

 of the granules in tubercle and allied bacilli, the thermal death point of the pre- 

 sumed spores of B. tuberculosis, etc. It was found that many forms which will 

 survive exposure for 1.5 minutes at 80° C. are killed by exposure for half an 

 hour, and yet more by exposure for an hour. 



On the pathology of bovine actinomycosis, a preliminary report, F. Gbtf- 

 FiTH [Jour. Hyg. [Camhridge], 15 (1916), No. 2, pp. 195-207).— Previously 

 noted from another source (E. S. R., 34, p. 782). 



The Bacillus enteritidis as the cause of infectious diarrhea in calves, K. F. 

 Meyek, .1. Traum, and C. L. Roadhouse {.Jour. Amer. Yet. Med. Assoc, 49 

 (1916), No. 1, pp. 11-35). — The authors' investigations, conducted at the labora- 

 tory of the University of California, have led to the conclusion that B. enteri- 

 tidis is responsible in the United States for certain forms of infectious diarrhea 

 in calves. It is pointed out that our knowledge concerning B. enteritidis and 

 paracolon infections, especially in bovines in this country, is very limited. While 

 the observations do not permit definite conclusions as to the prevention and 

 treatment of infectious diarrhea of calves after the first few days of their lives, 

 they do, however, suggest that when milk of an unknown quality is fed it 

 should first be pasteurized. " Symptomatic treatment is as a rule not satisfac- 

 tory and not much can be expected from either serum or serum and bacterln 

 treatment unless the specific organism is employed in the production of these 

 biologic products." 



Observations of keratitis infectiosa of the reindeer, B. R. Avid (Dent. 

 Tierdrztl. Wchnschr., 23 (1915), No. 28, pp. 226-229; abs. in Internal. Inst. Agr. 

 [Rome], Mo. Bui. Agr. Intel, and Plant Diseases, 6 (1915), No. 9, pp. 1209, 

 1210). — A summary of investigations of a disease of reindeer found to be iden- 

 tical with keratitis infectiosa of cattle. 



Coccidiosis of Egyptian sheep and goats, Mohammed Askar (Agr. Jour. 

 Egypt, 5 (1916), No. 1-2, pp. 50-62, pi. i).— The discovery of this disease in 

 Cairo abattoirs is recorded and a brief account is given of the causative agent. 

 Hog cholera: Its control and eradication, O. E. Strodtman and W. G. West 

 (Kans. Live-stock Sanit. Dept., Farmers' Bui. 1 (1916), pp. i6).— This dis- 

 cusses the subject under the heads of causes, symptoms of hog cholera, treat- 

 ment of infected and exposed herds, methods of using the serum, manner of 

 treatment, and prevention. The symptoms and treatment of lungworms and 

 bowel worms in hogs are also briefly discussed. 



Production of clear and sterilized antihog-cholera senim, M. Dorset and 

 R. R. Henley (U. S. Dept. Agr., Jour. Agr. Research, 6 (1916), No. 9, pp. 333- 

 33S). — For the production of clear and sterilized antihog-cholei-a serum the 

 authors have devised the following procedure: 



Bean extract for agglutinating the blood corpuscles is prepared by soaking 

 100 gm. of coarsely ground white navy beans for one hour in 500 cc. distilled 

 water, with occasional shaking. The pulp is then strained through cheese cloth 

 or cotton and mixed with powdered kie.selguhr and filtered until clear. The 

 clear, filtered extract is then passed through a bacteria-proof filter of infusorial 

 earth. 



In preparing the defibrinated blood for centrifugalization 1 cc. of the 

 sterile bean extract is added to each 100 cc. of the cool defibrinated blood. The 

 mixture is allowed to stand until agglutination is clearly evident. One gm. of 

 finely powdered sodium chlorid is added and stirred until dissolved. The 

 mixture of defibrinated blood, bean extract, and salt is allowed to stand for 

 about 15 minutes, placed in suitable containers, and rotated in a centrifuge for 

 15 minutes at a speed sufficient to produce in the cups a precipitating force equal 

 to approximately 1,700 times gravity. The serum may then be poured from the 



