PRKVKXTION 



409 



of a dog. In a few days the trypauosoma will be found in 

 the usual way if the disease is surra. Although this requires 

 some time the importance of a positive diagnosis demands that 

 it should be done. 



Surra may be complicated with broncho-pneumonia, Rin- 

 derpest and tuberculosis (especially in cattle), foot and 

 mouth disease, pseudo-actinomycosis, neoplasms and septi- 

 cemias as yet little understood. 



If no history or symptoms are known, the diagnosis can 

 be made post-mortem from the bacteriological examination of 

 the tissues or blood, as Bad. aiifhracis'xs readily found in cases 

 of anthrax. 



§ 317. Prevention. The importation of animals from 

 infected countries should be prohibited. If the disease gains 

 entrance, the infected animals should be destroyed. In fram- 

 ing regulations for quarantine particular attention should be 

 paid to the wild animals and to circus animals. 



Lingard found that arsenic has a decided effect in dimin- 

 ishing the number of surra organisms in the blood of affected 

 animals. Thus far serum therapy is not successful. 



From the latest results, it is very clear that infected 

 animals must be destroyed and the healthy ones protected 

 from the bites of insects. 



REFERENCES. 



1. Btrke. vSurra or progressive pernicious atKL-mia. ret. Jour. 

 London, Vol. XXV, 1887. 



2. Durham. Tsetse disease. Veterinarian, Vol. LXXI (1898). 



3. DrRRAXT. A trypanosoma found in blood of cattle in India. 

 Jonr. Cuinp. I'atli. and Theia. \'ol. X\'II (1904), p. 209. 



4. EvAXS. Report on surra disease iu the Dera Ismail Khan Dis- 

 trict. 18S0. Military Department. 



5. Evans. On a horse disease in India known as " surra," proba- 

 bly due to a Hieniatozoon. I'et. Jour. London. \'o\. XIII (1881), 

 July, Aug., Sept., Nov. 



6. Hassai,!,. Bibliography of surra and allied trypancsomatic 



