SECOND PART. 



ABSTRACTS 



AGRICULTURAL INTELLIGENCE 



GENERAL INFORMATIOX. 



RURAL ^4" " Recent Researches on the Possible Transmission of Animal Trypanosomiasis to 



HYGIENE Man : the Biological Reactions in Human and Animal Trypanosomiasis with refer- 



ence to the Identification of the Virus (i). — i<anfranchi alessandro., in Atti cuiia, 



Rcale Accademia dei Lincei, Serie Quinia, Rendiconti, Classe di Scienze fisiche, matematiche 

 e naturali, Vol. XXV, part 8, ist Half Year, pp. 601-605. Rome, April 16, 1916. 



The writer wished to find the Umits of efficacy of his serum in the pre- 

 sence of the 3 viruses : Lanfranchii, Evansi and gambiense. To attain this ob- 

 ject, while keeping the quantity of virus invariable (0.2 cc), he varied 

 the quantity of serum, using it in the proportions of : 1-0.5-0.25 cc. etc. 

 The duration of contact of the 3 viruses with the writer's serum, with nor- 

 mal serum, and physiological serum was 3 minutes in every case. The dif- 

 ferent mixtures were then inoculated into the peritoneum of white rats. 



It was found that the serum had completely exerted its protective 

 action on the animals inoctilated : 



with the virus Lanfranchii when the serum was used in doses of 

 1 - 0.5 - 0.25 cc. ; with virus gambiense, in doses of i cc. ; with virus 

 Evansi, in doses of i - 0.5 cc. 



On the other hand, with virus gambiense at the rate of 0.25 cc. it pro- 

 longed the course of the experimentally induced disease and with virus 

 Evansi in the same amount the prolongation was still greater. 



(i) See also B. July 1916, Xo. 767. (Ed.) 



