584 EXPERIMENT STATION KECOED. 



The ophthalmo reaction with, phymatin, W. Assmann {Berlin. Tierdrztl. 

 M\-hnfichr., 27 (1911), ^'^- i6, pp. 287, 2<S'8).— Of 210 animals 145 gave a posi- 

 tive reaction with phymatin. The results were confirmed, by autopsy on all 

 the animals examined. 



Vaccination against tuberculosis in bovines, W. Ebeling (Med. Krit. Bl. 

 Hamburg, 1 (1910), No. 2, pp. 81-S9 ; ahs. in CentU. Bakt. [etc.], 1. AM., Ref., 

 Jf9 (1911), No. 15-16, p. Ji89). — This is a summary of the author's report to the 

 Ninth International Veterinary Congress held at The Hague during 1909. 



Morphological and experimental studies of a new trypanosome found in 

 cattle in Uruguay, O. Petek (Arch. Schiffs u. Tropcn Ilyg., IJf (1910). Beihefte 

 6, pp. -',0, pi. 1; ahs. in Bui. Inst. Pasteur, 8 (1910), No. 21, pp. 951, 952; Sleep- 

 ing Sickness Bur. [London] Bui., 2 (1910), No. 22, pp. 411, 412). — During the 

 course of investigations conducted in Uruguay in which the blood of a large 

 number of cattle was examined, the author found a trypanosome which has all 

 the characteristics of the Trypanosoma theileri group. Its pathogenic proper- 

 ties have not as yet been sufficiently investigated, but that the trypanosome 

 possesses such is shown by inflammation observed in the spleen, liver, and 

 lymph-glands. 



The incubation period in artificial infection varies from 9 to 16 days. The 

 trypanosomes can be demonstrated in the blood from 10 to 12 days and are 

 always present in small numbers only. The blood remains infective for at least 

 11 months. 



The trypanosome can be transmitted with certainty to cattle, less easily to 

 calves; it can not be transmitted to horses, dogs, sheep, goats, rabbits, wild 

 rats, guinea pigs, and white mice. The manner of transmission in nature is at 

 present imknown. 



The area of distribution includes the Republic of Uruguay and the adjoining 

 Pi'ovinces of Argentina and Brazil. As the 7 cattle in which the infection was 

 found came from different sections, the author believes it to be widespread. 



The disease was detected in each instance in the slaughterhouse, the presence 

 of a splenic tumor leading to the examination of the blood and spleen pulp. In 

 2 instances piroplasmata were found as well as trypanosomes, the latter always 

 being very scarce. 



A bibliography of 36 titles is appended. 



Further investigations into anaplasmosis of South African cattle, A. 

 TiiEiLEB (Rpt. Dir. Yet. Research, Union So. Africa, 1 (1911), pp. 7-.'f6, pls.7). — 

 This paper consists of 4 parts entitled, respectively. The Separation of Anaplas- 

 mosis from Babesiosis (pp. 8-20) ; To Test the Immunity Conferred by Ana- 

 plasma marginale (var. centrale) against Anaplasm-a marginalc Proper (pp. 

 20-25) ; The Transmission of Anaplasmosis by Ticks (pp. 26-32) : and The 

 Inoculation of Anaplasma marginale (var. centrale) as a Means of Protecting 

 Cattle against Anaplasmosis (pp. 33^5). The following conclusions have been 

 drawn by the author from the investigations reported : 



" The transmission of Anaplasma marginale is only possible with blood con- 

 taining red corpuscles. Filtrated blood failed to produce the disease when 

 inoculated, the injected animals not showing any lesions at all and proving 

 susceptible to subsequent blood inoculation (heifer 1211). The incubation 

 period after the injection of blood containing anaplasms varies in length and 

 depends on the quantity of blood injected, being shorter after an injection of 

 a large quantity of blood and after the anaplasms have passed through a 

 number of animals. 



" Distinction has to be made between varieties of anaplasms. In this article 

 one variety has been distinguished as A. marginale and the other as A. mar- 

 ginale centrale. The distinction is based (1) on the different position the 2 



