1084 



EXPERIMENT STATION RECORD. 



the same time all bogs on siuroiimliiij: fariiis should be treated by the serum- 

 simultaneous metbod." 



Investigations into the hematogenous nephritis of swine, K. Degkn {Unter- 

 SHcliungcn iihcr die hlhnatogcnc ]\lc]ihritis dcs Schwcinrs. Innug. Diss., Univ. 

 UicNftcn, JH07 ; rev. in Berlin. Tierdrztl. Wehnsehr., 1008, No. 31, p. 5.'i8; Vet. 

 Ree., 21 (1908), No. lO'/S, p. Do). — Tbe disease is not a specific one due to a 

 sinjile micro-or}ranism but to a polybacterial infection. The author estimates 

 thai ~> per cent of all swine slauiibtered in Dresden are affected. 



Infectious anemia of the horse, M. Francis and II. P. Marstellkk {Terns 

 Sta. Bui. 119, pp. 3-19, figs. 8, dgm. 1, eltarts 5). — This is a preliminary report 

 on the symptoms and post-mortem examinations of a number of horses and 

 mules affected with an obscure wasting disease prevalent in the flat coastal 

 district of Texas and similar to infectious anemia reported from Nebraska, 

 JMlnnesota, North Dakota. Manitoba, and other localities. Intermittent fevers 

 and emaciation are the conspicuous symptoms of this disease. The author 

 estimates that SO per cent of the affected animals die within a few weeks. 



Inoculation experiments were conducted with a virus obtained in October, 

 1907, from a horse ( \o. 1 ) at Katy, Harris Count}', a summary of which is 

 here given in tabular form. 



Results of inoculttthin e.rperiiiients. 



A calf, sheep, goat, and pig were inoculated subcutaneously with 1 cc. of 

 blood taken from horse No. 2, and one <tf each was also inoculated with a 

 similar amount of blood taken from horse No. 5. None of these was suscep- 

 tible. A dog Inoculated subcutaneously with 1 cc. of blood from horse No. 

 was not susceptible. 



The infection is thought to be due to an ultravisible organism which can be 

 conveyed to other horses and mules by subcutaneous and intravenous injections 

 of blood. Tbe blood of animals that survived the first attack and regained 

 much of their lost flesh and spirit is as capable of producing the disease one 

 year after primary infection as during the first sickness. It seems probable 

 that the blood remains virulent during the life of the animal affected. Mule 

 No. 7 while susceptible resisted the infection to such a degree as to continue in 

 good health. " This may make the detection and eradication of the disease a 



