VETERINARY MEDICINE. 1185 



ably imik's. slu-cp. and other domestic animals. A description is given of tlio 

 siiecies, which Mesnil considers as iirob.dily Tri/jxinosonid (limorpfton. 



Notes on the duration and course of camel surra, II. T. I'kask and S. II. 

 Gaig'cu {Jour. TnjiK Vvt. tici., 3 (IHOS), Ao. .'/, />/>. .J.?7--J.3J ) . — The percentage of 

 camels that recover from snrra seems to be low. They appear to be in an 

 intermetliate stage of tolerance and it is possible that they are gradually acquir- 

 ing an imnumity similar to that of Indian cattle. 



Natural canine surra, S. H. Gaigeu (Jour. Trop. Yet. Hci.. ,? (I'MS), Ao. .}, 

 pp. Ji-'iS-Jfol, charts 11). — Examinations made by the anthor in India of the 

 blood of several hundred dogs resulted in the finding of but one case of natural 

 surra. A report is presented of the symptoms in this dog and in other animals, 

 including the horse, dog, rabbit, guinea pig, and white mouse,- inoculated snb- 

 cutaneously with blood from the natural case. These inoculations are said to 

 show that the dog was probably infected from the horse. 



" lu the Punjab we have to deal with only one type of trypanosome but with 

 two strains, a camel strain and au equine strain, which can not be distinguished 

 morphologically, but can be distinguished by the virulence of the disease they 

 produce in animals experimentally inoculated or naturally infected. By a 

 series of inoculations one strain may take on the characters of the other. The 

 ' camel surra ' trypanosome by passage through several horses comes up to the 

 standard of virulence of what might bo called the 'horse surra ' trypanosome." 



Treatment of surra by atoxyl and oi-piment, J. D. E, Holmes (Jour. Trop. 

 Vet. Sci., 3 (1908), No. .'i, pp. J/S'i-'i'/.i). — In the experiments here recorded the 

 results obtained by Laveran and Thiroux (E. S. R., 20, p. 579) from the use of 

 atoxyl in subcutaneous injections alternated with trisulphid of arsenic by mouth 

 were confirmed. The horse, guinea pig. and rabbit were used in these 

 experiments. 



" Solutions of atoxyl up to 15 per cent can be given intravenously and sub- 

 cutaneously without injury to the tissue. In our experiments we found that 

 the lower dilufions were preferable, as they were absorbed more readily and 

 caused less irritation at the seat of inoculation. For horses, a 4 per cent solu- 

 tion and for small animals, a 1 per cent solution was adopted. The horse can 

 tolerate 5.5 gm. of atoxyl per 500 lbs. body weight, administered intravenously. 

 Subcutaneously somewhat less than double this amount can be administered 

 without any toxic effect. In the guinea pig 0.06 gm. per 500 gm. body weight 

 is the maximum amount which can be injected subcutaneously with safety. In 

 the treatment of surra with atoxyl it is not necessary to use large doses. 

 About a quarter of the toxic amount is sutficient." 



The relation of human and bovine tuberculosis, R. Koch (Tuberculosis, 

 7 (I'JOS). Xo. II. jip. 'I'.il-.JO.J; Jour. Conipdr. I'ulli. and Thvr., 21 (lUOH). Xo. //, 

 pp. 303-308). — This is a paper presented at the International Congress on 

 Tuberculosis held in Washington. I>. C, in 1908. 



Attention having been called by Dr. Theobald Smith to certain differences 

 lii'twccn the tubercle bacilli found in man and cattle, exiieriments were con- 

 ducted in cooperation with Schiitz. The conculsions arrived at are similar to 

 those presented at the British Congress on Tuberculosis in 1901, viz: "The 

 tubercle bacilli of human tuberculosis are different from (hose of bovine tubercu- 

 losis. Iliunan beings may be infected by bovine tubercle bacilli, but serious 

 diseases from this cause occur very rarely. Preventive measures against 

 tuberculosis should therefore be directed i)rimarily against the propagation of 

 human tubercle bacilli." It is stated that there are many possible sources of 

 error in the work and that it is only when such have been excluded that the 

 results can be accepted as conclusive. 



SSSW— No. 32—09 7 



