80 EXPERIMENT STATION RECORD. 



grown on land treated with some artificial fertilizer, and the anthor suggests the 

 possible connection between the fertilizer and the disease observed in the cows. 



The discovery of the parasite of Texas fever and of carceag, V. Babes ( Centbf. 

 Bakt. u. Par., 1. Aht., 33 {1903), No. 6, Orig., j>p- 44^-458, figa. ^).— A controversial 

 article in which the author presents evidence for his priority in the discovery of the 

 organism of Texas fever and of carceag or ictero-hematuria of sheep. 



The cattle tick situation, II. A. Mor(;ax {Proc. Soc. Prom. Agr. Sci. 1903, pp. 

 7.J-74) . — Notes are given on the life history of the cattle tick. The author suggests 

 that if infested cattle })e removed from their pastures and kept in feed lots or small 

 pastures for a period of al)0ut 18 days the majority of the ticks would fall off and the 

 cattle could then be taken back to other pastures which had been freed from ticks 

 by rotation. The author believes that if some such plan were adopted in a cooper- 

 ative w^ay the cattle-tick nuisance could be readily eradicated. 



The duration of active immunity to cattle plague, V. K. Tvaeyaxovich {Arch. 

 Vet. Xanl; St. Petershnrg, 33 {1903), No. 1, pp. 25-27).— la. the experiments briefly 

 reported by the author immunity to cattle plague in the calves, cows, and bulls upon 

 which the author experimented was found to persist for a period varying from 4 to 6 

 months. 



Petechial fever in cattle, \. Mixdek {Schu-elz.Arch.TlerJi., 44 {1903), No. 6, pp. 

 271-275). — Detailed notes on the clinical symptoms and pathology of 3 cases of this 

 disease. 



Necrosis as a result of Bacillus necrophorus, H. A. Vermeulen {Tijdschr. 

 Yeeartmnijk. Maandhlad, 30 {1902), No. 3, j)p- 102-111). — The author investigated a 

 number of cases of necrosis of the liver, in cattle and from material obtained from 

 these cases inoculation experiments were made with laboratory animals to determine 

 the effect of 7?. vecrojjhorus. It was found that the necrosis which is due to this 

 organism may spread l)y means of embolism, by continuity, or contiguity. 



Combating- dysentery of calves with coUargol, P. Stampel {Zischr. TIdermed., 

 6 {1902), No. 4, pp- 284-288). — ^On the basis of the author's experiments with this 

 disease it is concluded that dysentery of calves may be in the majority of cases pre- 

 vented by repeated injections of collargol into the jugular vein during the first 3 days 

 of the calf's life. 



Infections of calves due to coli bacilli, Baer {Schweiz. Arch. Tierh., 44 {1902), 

 No. 5, 2)p- 223-228). — Attention is called to the agency of coli bacilli in producing 

 total cataract and icterus in calves. The numV:)er of infections produced by organ- 

 isms of this group is know^n to be quite large and the diseases are of a variety of 

 forms. Notes are given on the history of cases of total cataract and icterus produced 

 by these organisms. It was found that in cases of total cataract organisms were 

 isolated from the liver, kidneys, and viterous humor. 



The beef measle worm in southern parts of Austria-Hungary, F. Munih 

 {Ztschr. Fleisch- u. Milchhyg., 13 {1902), No. 1, pp. 11-13) . — Brief notes on the extent 

 of infestation by this worm, especially in the cities of Trieste, Fiume, and Pola. 

 While the number of cattle found to be infested with this ])arasite is very small it is 

 believed that figures obtained from the present examination do not represent the 

 actual condition, since the masticatory nmscles have not been thoroughly examined. 



Experimental study of sheep pox, A. Borkel {Ann. Imt. Pasteur, 17 {1903), 

 No. 2, pp. 123-137 , figti. 13). — Investigations undertaken by the author were confined 

 largely to filtration of the virus, vaccination, and serotherapy. It was found that 

 when filtration was performed rapidly the virus did not pass through the filter. 

 Notes are given on the most suitable means for obtaining virus in large quantities. 

 In experiments to tsst the value of serotherapy in this disease the results oljtauied 

 were quite encouraging. It w'as demonstrated that 20 cc. of serum oljtained from a 

 hyper-immunized animal was more than sufficient to prevent a serious mortality in 

 a badly infested herd. Further exjieriments will be made to determine the mini- 

 mum dose of serum required for effective prevention of the disease. 



