582 EXPERIMENT STATION RECORD. 



HipiX)bosca, Hsematobla, Chrysops, and Lyperosia, besides mosquitoes and sand 

 flies. Curves given illustrating tlie prevalence of Tabanus, Hjematopota, Stom- 

 oxys, mosquitoes, and sand flies in the dry weather and rains, respectively, show 

 that the first four were scantily represented in hot weather, but increased 

 enormously in the rains. The habits of each are here described. 



An endeavor was made to obtain evidence of the cycle of development of the 

 trypauosome in the mosquito without success, and a similar result attended au 

 experiment with Stomoxys. By interrupted feeding a Trypanosome was trans- 

 ferred from a camel to a white rat by Tabanus, Htematopota, and Stomoxys. 

 From the number of flies for each genus required, the author concludes that 

 Tabanus has far more power of transmission than Stomoxys. With mosquitoes 

 and sand flies the result was negative. Oxen were thought to be the chief 

 reservoirs of infection. The author believes that Stomoxys becomes a trans- 

 mitter when an epidemic has been started by Tabanus. It was noted that but 

 few blood-sucking flies entered a dark stable. 



Rocky Mountain spotted fever in the rabbit, L. Gomez {Jour. Infect. Dis- 

 eases, 6 (1909), No. 3, pp. 383-386). — "The rabbit is susceptible to the virus of 

 Rocky Mountain spotted fever as cultivated for a long time in the guinea pig. 

 The disease is milder in its symptoms than that produced in the monkey and 

 guinea pig. The blood of rabbits at the height of the disease is infective for 

 guinea pigs. It has been possible to transmit the disease from one rabbit to 

 another through six animals successively. The blood of rabbits which have 

 recovered contains bodies which protect against the disease, such bodies being 

 largely or entirely absent from the blood of normal rabbits." 



On the transmission of animal tuberculosis to man, F. Basenau and T. Van 

 DER Sluis (Ztschr. Fleisch u. Milchhyg., 19 (1909), No. 7, pp. 237-240; ahs. m 

 Jour. Com.par. Path, and Ther., 22 (1909), No. 2, pp. 166-168) .—Studies were 

 made of tubercle bacilli obtained from veterinary surgeons who had become 

 infected while making post-mortem examinations at the Amsterdam abattoir. 

 The results of the investigations go to strengthen the belief that animal tuber- 

 culosis can be conveyed to man, and that after passage through the human body 

 the original virus, as has already been shown by Klein, is still. capable of pro- 

 ducing tuberculosis in animals. 



The tonsils of cattle and their relation to the origin of tuberculosis, 

 M. Devrient (Dent. Tierdrztl. Wchnschr., 16 (1908), Nos. 51, pp. 729-73-',, pi. 1; 

 52, pp. 745-750, pi. 1; al)s. in Bui. Inst. Pasteur, 7 (1909), No. 3, p. ii2).— This 

 is a report of investigations conducted at the Berlin abattoir. 



Ophthalmo- and cuti-reactions to tuberculin in cattle, Kohl (Berlin. 

 TierdrtztJ. Wehnschr., 25 (1909). No. 5, pp. 92, 93; ahs. in Bui. Inst. Pasteur, 7 

 (1909), No. 4, p. 155). — In the author's experiments Koch's original tuberculin 

 (undiluted) was used. One hundred bovines were tested by the ophthalmo- 

 method, but in 13 cases the results did not agree with the post-mortem findings. 

 In 9 of these cases the reaction was not manifest but the animals were tuber- 

 culous, while in the other 4 cases the reactions were positive but no lesions 

 could be found at the post-mortem examinations. The results of the cuti-reac- 

 tion were always negative. 



On the intradermal reaction to tuberculin iri animals, G. Mousstr and C 

 Mantoux (Bui. Soc. Cent. Med. V6t., 85 (1908), No. 20, pp. 500-518, figs. 5).— 

 This is a more detailed account than that previously noted (E. S. R., 21, p. 178). 



The intradermal reaction to tuberculin, Moussu (Bui. Soc. Cent. MM. V4t., 

 85 (1908), No. 24, pp. 649-655; abs. in Bui. Inst. Pasteur, 7 (1909), No. 4, pp. 

 154, 155). — Investigations reported by the author confirm the earlier results 

 obtained (see above). The new method appears to furnish a means of diaguosis 

 equal to the subcutaneous injection. 



