g78 EXPERIMENT STATION EECOED. 



40° C, but at times it is some tenths over this flj^ure. From the fourth month 

 on the temperature gets more regular. It may be between 38.7 and 39.5°, but 

 it never goes over 40° at this time. 



Healthy pigs reacted to an injection of 0.1 and 0.8 cc. of old tuberculin (in 

 10 cc. of physiological salt solution). In 9 out of 48 animals the rise in tem- 

 perature Vi'as more than 1°, but the temperature in no case went over 41°. 

 Sixteen 4 to 6 months' old animals were given 0.02 to 0.05 mg. of the bovine 

 tubercle bacillus culture, and after a lapse of 4 to 8 Aveeks the animals received 

 either 0.15 cc. of human tuberculin or 0.3 cc. of bovine tuberculin. The animals 

 showed a rise in temperature of 1.1°, and the increased temperature limit 

 vacillated between 40.6 and 42°. 



Consequently, a temperature which goes over 41°, that is, a temperature of 

 1° over that which was observed the night previous, is to be regarded as evi- 

 dence of tuberculosis in 2 to 4 months' old pigs. In older animals (with a low 

 normal temperature) a temperature over 40.5° is considered positive. 



The intracutaneous test was tried on 20 tubercular and 37 nontubercular 

 animals. These v.-ere given 0.2 to 0.4 cc. of tuberculin in salt solution, and 

 on the opposite flank 0.2 to 0.4 cc. of glycerol in salt solution. The reaction 

 was positive with 15 out of 20 tubercular animals and in 1 of 37 healthy pigs. 

 The epicutaneous test was positive with 10 tubercular pigs. The ophthalmic 

 test was negative in 16 tubercular pigs. 



An attempt to immunize calves against tuberculosis by feeding them the 

 milk of vaccinated cows, W. L. Moss {Bid. Johns Hopkins Hosp., 26 {1915), 

 No. 293, pp. 241-245; ahs. in Jour. Amer. Med. Assoc, 65 (1915), No. 1^, pp. 

 360, 361). — The author concludes that a relative degree of immunity against 

 tuberculosis may be conferred on calves by feeding the milk of immunized cows. 



The presence of so-called " complement " in milk, H. T. Hewlett and C. 

 Revis (Jour. Hyy. [Camhridge^, 14 (1914), No. 4, pp. 481-497; a^s. in Jour. 

 Chem. Soc. [London], 108 (1915), No. 628, I, p. 70).— Milk always contains 

 complementary substance, but this is especially true of colostral and mastitis 

 milks. In the latter amboceptor is also present. No relation between the amount 

 of complementary substance and cellular elements in milk could be found. The 

 hemolytic system is very delicate. 



"Warble fly experiments, S. Hadwen (Amer. Vet. Rev., 4^ (1915), No. 4. PP- 

 453-457). — The author corroborates the observations of Carpenter et al. (E. S. R., 

 32, p. 680) in finding that the warble-fly larva penetrates the skin of its host. 

 Mention is made of a rash or eruption which is apparently caused by the pene- 

 tration of the larva, for which the term " hypodermal rash " is proposed. " The 

 eruption begins by an escape of serum which sticks the hair together, then the 

 patch of hair dies and can be pulled off, leaving a raw spot usually about the 

 size of a 10-cent piece, but often larger. In other cases a little pus can be seen 

 in the superficial layers of the skin ; again in other cases, edematous swelling 

 occur as large as one's fist, sometimes hard, sometimes soft and diffuse." 



Hog cholera and the veterinarian's relation to same, F. B. Whitfield 

 (Amer. Vet. Rev., 47 (1915), No. 2, pp. 203-213) .—After discussing the channels 

 whereby hog cholera is disseminated, the symptoms of and the methods in 

 vogue for preventing and curing hog cholera are considered. The dosages em- 

 ployed in the simultaneous method are stated. 



Some observations on hog cholera and the use of serum, H. P. Hoskins 

 (Amer. Vet. Rev., 47 (1915), Nos. 1, pp. 46-56; 2, pp. 188-196).— A discussion of 

 mooted questions in regard to hog cholera and its treatment by the single, 

 double, and follow-up methods. The procedure employed at the Minnesota 

 Experiment Station is described in detail. 



