1124 EXPEKIMENT STATION RECORD. 



permit a certain differentiation. The author found l)y experiment that the period 

 of incul)ation of the pseudo-cattle plague was less than tliat of the true cattle plague, 

 and that the diseases differed in other i espects. 



Bovine pasteurellosis in the Malay Peninsula, Ca-rougeau {Rec. Med. Vit., 8. 

 ser., 9 {1902), No. IS, pp. 473-';S6). — As a result of the author's investigations it is 

 concluded that the epizootic outbreaks in the Malaj^ Peninsula are not due to cattle 

 plague, but rather to hemorrhagic septicemia of cattle or bovine pasteurellosis. These 

 outbreaks may appear under 3 forms — septicemic or peracute, acute with various 

 localizations, and chronic. They are all due to the same organism, which belongs 

 to the genus Pasteurella. This organism exhibits great variations in virulence. It 

 was found possible to immunize animals by vaccinating them Avith an attenuated 

 form of the organism. It is lielieved also that the data ol)tained from a study of the 

 disease in the Malay Peninsula are applicable to outbreaks observed in Ind<:)-China. 



The bacillus of contagious abortion, H. Preisz {Ccnthl. Bald. n. Far., 1. Aht., 

 33 [1903), No. 3, Orhj.,pp. 190-196, Jl<j-^. 4)- — The author proceeded along the lines 

 of technique recommended by Bang in order to obtain j^ure cultures of this organism. 

 The bacillus develops best in a medium consisting of agar with peptone and salt and 

 containing a moderate amount of oxygen. The best development is obtained at a 

 temperature of 37° C; the optimum content of oxygen was found at a depth of from 

 7 to 15 mm. under the surface of the medium. The author describes in detail the 

 behavior of this organism upon any artificial cultures. It is not stainable according 

 to the Gram method. Experiments with female guinea pigs indicated that the organ- 

 ism does not cause abortion in these animals. 



Abortion in cattle. Scours in new-born calves, L. Vax Es {NortJi Dalrjla Sta. 

 Bui. 't.'i, }ip. l.')l-l(;7'i. — The author briefly discusses 3 forms of abortion, viz, that 

 due to mechanical injury, the form due to eating moldy food, and infectious abortion. 

 As causes of vegetal )le natui-e the author mentions ergot, corn smut, and certain ever- 

 green plants. Infectious abortion attacks horses, sheep, and goats, but more com- 

 monly cattle. It is believed that cows affected with the disease gradually recover. 

 The symptoms are described in considerable detail. No medicinal treatment is 

 known which is successful in checking the disease. Attention should be given to pre- 

 ventive measures, such as destruction of the fetus and after-birth and the disinfection 

 of animals, staliles, and premises. Directions are given for carrying out disinfectant 

 measures. 



Scours in calves usually appears soon after birth and has been shown to Ije con- 

 nected with a disease of the lungs which may appear somewhat later. There is little 

 hope of success in treating this disease by drugs, but subnitrate of bismuth, creolin, 

 or salol may often be used with encouraging results. Attention should be chiefly 

 directed, however, to disinfection of stables and premises. 



White scour and lung disease in calves, J. D. Stewakt {Agr. Gaz. Neio Sovth 

 Walei<, 14 (1903), No. 1, pp. 1-10, figi^. 6). — This disease prevails in the older dairy 

 regions of New South Wales to a considerable extent and causes a mortality which 

 varies from 5 to 80 per cent. White scour and lung disease are associated as in 

 other localities where the disease has Ijeen studied. Notes are given on the usual 

 symptoms and complications as observed l)y the author. In preventing the disease 

 it is recommended that care be exercised in introducing new stock, that new calf 

 pens be constructed, that the posterior parts of the cow be washed, and that the 

 umbilicus lie ligatured and treated with carbolized oil immediately after birth. 

 Infected calf pens may be freed of infection by antiseptic treatment and special atten- 

 tion should be given to the thorough cleansing of all receptacles which are used for 

 holding milk to be fed to calves. 



Ichthyosis in calves, S. Zertzalov {Arch. Vet. Nank, St. Petersburg, 32 {1902), 

 No. 12, pp. 1038, 1039). — Brief notes are given on the symptoms which this disease 

 usually presents, as observed in calves. The same disease occurs in man, but 

 usually under a somewhat different form. 



