VETERINARY MEDICINE. 807 



have all been slaughtered, and the results show that in vaccination may be had the 

 most satisfactory method of controlling tuberculosis. 



The experimental disease caused by inoculation with tubercle bacilli from 

 which the oil has been removed, J. Cantaci /ink {Arm. Tnst. Pasteur, 19 I 

 No. 11, />/>. 699-714)- — It has Long been known thai tubercle bacilli killed by heat- 

 ing to a temperature of li'<>° C. remain toxic and when inoculated into guinea pigs 

 may cause serious disease or death. 



The author wished to determine the effect of the complete removal of fat from 

 tubercle bacilli. Forthis purpose bacilli in glycerin bouillon were kept at a tem- 

 perature of »>0° C. for 1 hour on 5 successive days. The dead bacteria were then 

 filtered, dehydrated in vacuum, and treated in a Soxhlel apparatus bj a successive 

 exposure to methyl alcohol and petroleum ether. After from 36 to |s hours all 

 trace of fat had disappeared. The bacteria thus treated wen- of bovine origin and 

 of a virulence sufficient to kill guinea pigs within 36 hours aftei inoculation with a 



dose of 20 cm. 



Within 2 hours after inoculation of a fatal <lose of bacteria treated as just described 

 the temperature of guinea pigs fell several degrees. This subnormal temperature 

 persisted for »i hours. During the progress of the disease the blood becomes eosino- 

 philous, the kidney hyperemic, the muscle fibers of the heart swollen, and other 

 pathological lesions appear. When smaller doses were given the subnormal tempera- 

 ture was rapidly followed by fever, emaciation of the animal, ami the formation of 

 tuberculous nodules or abscesses which were later resorbed entirely. 



Further experiments showed that tubercle bacilli, killed and deprived of their fat, 

 cause an acute necrosis of the leucocytes when given in fatal doses, while in small 

 doses they produce similar symptoms of less duration and an enormous hypertrophy 

 of the spleen. Animals inoculated with such bacilli react in a typical manner to 

 tuberculin for a period of several weeks. When such bacilli are treated with ( i ram's 

 mixture of iodin and potassic iodid they cause no necrosis. The active resorption of 

 treated bacilli may be caused by daily injections of iodid of potash after inoculation. 



Ranilla, J. C. Skgura (Bol. Sec. Fomento [Mexico], 5 ( 1905), No. i. I. />/>. 1',0-lw 

 figs. 1 ?). — Ranilla has been shown to be a disease of cattle identical with Texas fever 

 of this country and tristeza of South America. It is transmitted from diseased to 

 healthy cattle by means of the cattle tick. The pathogenic cause of the disease is 

 the same blood parasite which is observed in Texas fever, and treatment for the dis- 

 ease should, therefore, be the same as adopted against Texas fever. 



Abortion in cows, T. W. Cave (Jour. Southeast. Agr. <'<>!. Wye, 1905, Xo. 14, pp. 

 $45-248). — A brief account is given of contagious and noncontagious abortion in 

 cows, with a discussion of remedies for the contagious form. The plan adopted by 

 the author consisted in the isolation of all aborting cows, destruction of the fetuses 

 and fetal membranes, and a thorough application of Izal at the rate of 1 to every 80 

 to 200 parts of -water. 



The treatment of infectious vaginal catarrh, Attixger (Berlin. TierarzU. 

 Wchnschr., U>0.',, No. 50, pp. 845-848) . — The literature relating to this disease in cattle 

 is critically reviewed. 



As a result of the author' 8 study of thisdisease it is concluded that it is not possible 

 to adopt rational govern mental orders for the control of the disease, for the reason 

 that the nature of the disease is not sufficiently well known. It is not absolutely 

 certain that the disease is infectious or cause* 1 by micro-organisms. The results of 

 experiments thus far made are at variance regarding the methods of treatment, and 

 opinions differ widely also regarding the economic importance of the disease. 



Parasitic gastro-enteritis, F. (J. Ashley ( Vet. Bee., 18 (1905), No. 912, p. 

 448). — For a number of years the author has observed cases of gradual emaciation in 

 young steers grazing on swampy pastures. At first some of the cases were thought 

 to be tuberculosis, but later recovered. Occasionally acute symptoms developed and 



