VETERINARY MEDICINE. 483 



After describing the findings of various investigators in regard to Leutz's bodies 

 (E. S. R., 22, p. 283), the author states that as a result of his investigations he 

 finds that the views of Lentz in regard to the specificity of the bodies isolated 

 by him are correct. 



The mortality and the incubation period of rabies in man, S. Kozewaloff 

 (Centbl. Bakt. [etc.], 1. AM., Orig., 51 {1911}, No. 5, piJ. 892-391 ) .—Th\% paper 

 analyzes the results obtained at the antii'abies station at Charkow, Russia, 

 extending over a period of 21 years (1888 to 1908) with 25,608 persons, 24,051 

 of which were bitten, while the remainder came in contact with rabid animals 

 in some way or other. 



The chief disseminators of the virus were dogs (90.6 per cent), cats (6.1 per 

 cent), and wolves (1.2 per cent), the remaining animals mentioned being horses, 

 bovines, pigs, etc. Of the persons bitten and treated 260 died, and of these 161 

 died 15 days after the final injection was made. The greatest percentage died 

 as a result of the wolf bite, while no deaths were due to the bites of the bovine, 

 horse, pig, etc. The localities bitten were highest for the upper extremities 

 and least for the trunk. The period of incubation was studied in 212 fatal 

 cases, and in most instances (40.6 per cent) this was found to vary from 20 

 to 40 days. A minimum of 12 days was found in a 3-year-old girl and a maxi- 

 mum with 8 cases of over 200 days. 



The effect of vacuum desiccation upon the virus of rabies, with rem.arks 

 upon a new method, D. L. Harris and L. F. Shackell {Jour. Amer. Pub. 

 Health Av.soc, 1 {1911), No. 1, pp. 52, 53). — The method used was as follows: 



The material to be dried was placed in the bottom of a Schneibler's vacuum 

 desiccating jar, in the upper part of which was a separate dish containing 

 H2S04; the temperature was reduced by placing the jar, half submerged, in a 

 salt and ice mixture, and after thorough solidification of the material had 

 resulted, a rapid vacuum was produced by a Geryk pump to less than 2 mm. of 

 mercury. During the process of desiccation, the temperature in the lower half 

 is kept several degrees below 0° C.-. Unless the H;S04 be repeatedly shaken to 

 prevent surface saturation with water, the time required for complete desicca- 

 tion will be unduly prolonged. 



The authors found that " by using Shackell's method of desiccation, brains 

 and cords may be desiccated in toto without destruction of virulence. The 

 time required for the complete extraction of water is about 24 to 36 hours. A 

 number of brains have been so treated and the infectivity of all has been pre- 

 served. After the completion of desiccation, the brains are placed in an ordi- 

 nary desiccating jar over H2S04 and left continually exposed to light at the 

 ordinary room temperature." 



Investigations in regard to the infectiousness of street virus for white 

 mice when injected subcutaneously, S. Kozewaloff {Centbl. Bakt. [etc.], 1. 

 Abt., Orig., 51 {1911), No. 5, pp. 391-402). — These inve.stigations were made with 

 street virus and virus fixe, and tend to show that white mice are receptive sub- 

 cutaneously for street virus, but that this method is not so good as the classical, 

 subdural infection of rabbits. 



The life history of Trypanosoma gambiense and T. rhodesiense as seen in 

 rats and guinea pigs, H. B. Fantham {Proc. Roy. Hoc. [London], Ser. B, 83 

 (1911), No. B 563, pp. 212-221, pi. i ) .— " Nonflagellate stages of trypanosomes, 

 such as T. gambiense and T. rhodesiense occur. These nonflagellate stages 

 ('latent bodies ' of Moore and Breinl) are especially found in the lungs, spleen, 

 and bone marrow during periods of decrease of trypanosomes in the peripheral 

 blood of the host. They are in process of formation at or near the time when 

 the trypanosomes are most numerous in the peripheral blood. The formation 

 of latent bodies takes place especially in the lungs, and they collect in the 



