284: EXPERIMENT STATION EECORD. 



close need not be increased in order to obtain the reaction. The reaction to the 

 second dose of tuberculin, however, is not constant and the reason for the irreg- 

 ularity observed in such cases is not well understood. As a rule, the second 

 reaction appears more promiitly than the tirst and is somewhat less intense. 



With regard to the temperature reaction from tuberculin it appears impos- 

 sible to fix a minimum under which we may know with certaintj' that tuber- 

 culosis does not exist. In general a temperature of at least 40° C. in animals 

 which showed a maximum of 39.5° C. before injection may be relied upon as 

 indicating the presence of tuberculosis. 



Ophthalmo-tuberculin reaction in cattle, E. F. McCampbell and D. S. 

 White (Jour. Expt. Med., 10 (1908), ^'o. 2, pp. 232-237).— Tests of the ophthal- 

 mo-tuberculin reaction carried out by the authors on cattle indicate that this 

 method is of some value for diagnostic purposes. A characteristic conjunctivitis 

 appears within 6 or 8 hours in tuberculous animals, disappearing after 48 

 hours. The reaction is more pronounced in cattle which have not been recently 

 tested with tuberculin, but is only slightly reduced in intensity as a result of a 

 previous subcutaneous injection. 



Administration of the tuberculin test by stable helpers, A, Van Leeuwen 

 (Tijdschr. Veeartsenijk., 35 (1908), No. 5, pp. 269-276).— In the opinion of the 

 author the ordinary attendants about cattle barns are not capable of giving the 

 tuberculin test in a satisfactory way. It is recommended that the test be 

 applied only by qualified veterinarians. 



Dangers from the use of tuberculous animal products. Treatment of 

 tuberculosis with strychnin, V. Galtier (Jour. MM. Vet. et Zootech., 58 

 (1907), Dee., pp. 705-712). — Feeding experiments with the meat of tuberculous 

 animals indicated that this material ordinarily does not contain tubercle bacilli. 

 It is recommended, however, that such meat should always be sterilized by 

 thoi'ough cooking before being used as human food. 



Sf)mewhat beneficial effects were observed in experimental tuberculosis as a 

 result of treatment with arsenic or iodid of sodium combined with strychnin 

 or by the use of strychnin alone. Strychnin appeared to increase the resistance 

 of the animal to tuberculosis, to prevent to some degree the generalization of 

 the disease, and to lead to a more hasty healing of lesions. 



Chronic pseudotuberculosis in Norway, H. Horne (Norsk Vet. Tidsskr., 20 

 (1908), No. 3, pp. 72-77, fig. 1). — Pseudotuberculous enteritis, or Johne's dis- 

 ease, occurs quite frequently in Norway. The lesions produced in the alimentary 

 tract are described. The author believes that this disease has not been shown 

 to be identical with tuberculosis. 



Protective vaccination of cattle against hemoglobinuria, Bugge (Berlin. 

 Tierarztl. Wchnsehr., 1908, No. 6, pp. 95, 96). — Among 138 cattle vaccinated 

 against hemoglobinuria, 7 subsequently became affected with the disease and 

 2 died. It is believed that the vaccine used in these cases was somewhat too 

 virulent. The suggestion is therefore made that in future experiments along 

 this line a vaccine be used of lower virulence or in smaller doses. 



Bacilliform piroplasmosis of cattle in Algeria, H. SouLifi and G. Roio 

 (Compt. Rend. Aead. ,Sei. [Pari.s], 1J,6 (1908), No. J,, pp. 192, 193).— A piroplas- 

 mosis occurs in Algeria under two or three forms, the symptoms of which forms 

 are described by the authors. It is not certain whether the bacilliform piroplas- 

 mosis thus identified is an atypical form of Texas fever or a distinct disease. 



Post-partum paralysis of cows, A. Zehl (Berlin. Tierdrztl. Wchnsehr., 

 1908, No. 7, pp. 117-121). — Not all cases in which cows are unable to rise after 

 parturition are to be classified as parturient paresis. The symptoms, however, 

 are strikingly similar in most respects and cases of either disease are readily 

 cured by infusion of air into the udder. 



