780 EXPERIMENT STATION RECORD. 



Recurrent mange in horses, T. B. Goouall {Vet. Rec, in (1906), l^o. !)'>.'. 

 III). 251. 252). — The author has noted a number of oases of this disease in which 

 tlie symptoms were quiescent during the cold months but reappeared in the 

 spring and summer for ti years in successi(m. It has been observed that chiclien 

 mites will live for a year or more in close conflnement without any food being 

 given them. In such cases the mites found alive at the end of the period nuist 

 have maintained themselves by cannibalism. The same may be true for the 

 mites of horse mange. 



Horse sickness, L. E. W. Bevan (Rhoflesian Affi: Jour., -'/ (1906), No. 1, pp. 

 'i6-51. pi. 1). — The symptoms of this disease are described in detail. A system 

 of vaccination has been devised which protects horses quite successfully. On 

 an average somewhat less than 4 per cent of vaccinated animals die. There is 

 little hope of good results from the use of any medicinal treatment of horse 

 sickness. 



The distribution of equine piroplasmosis in Italy, L. Baruchello and A. 

 Pricolo iVIln. Vvt. [Uihin]. 20 (1906). No. J,2, pp. 1009-1015).— This disease, 

 which also passes under the name of typhoid fever or typhoid influenza, occurs 

 quite generally throughout Italy. Notes are given on the symptoms and patho- 

 logical processes which accompany the disease. 



The use of mercury in the treatment of equine piroplasmosis, G. Baroni 

 (Clin. Vet. [Milan'], 29 (1906), Nos. J^S, pp. 1033-10J/16 ; U, pp. 1057-1066) .—Re- 

 peated experiments were made in testing bichlorid and biniodid of mercury in 

 intravenous inoculation for the treatment of equine piroplasmosis. The results 

 obtained were quite promising, but the author does not feel justified in recom- 

 mending this treatment as certain to give desirable results. 



Piroplasmosis in dogs, .J. Wetzl (Ztschr. Tiermed., 10 (1906), No. 5, pp. 

 369-319, fii/s. 3). — PirupUisnta caiti.s, which has frequently been demonstrated in 

 dogs, closely resembles the blood parasite of Texas fever in cattle. The morphol- 

 ogy and biology of this parasite is described and notes are given on synqitoms 

 in cases of piroplasmosis in dogs. Inoculation of healthy dogs with the blood 

 of affected animals readily produces infection. 



Babies and the capture of stray dogs, H. Martel (Rev. Vet. [Toulotise], 31 

 (1906), No. 11, pp. 110-120). — Statistical data are presented regarding the 

 extent of rabies in parts of France as related to the number of stray dogs. The 

 results of an organized crusade against stray dogs are very striking. Since 1885 

 the total number of dogs in Paris has greatly increased, while the percentage of 

 rabies among dogs has fallen rapidly. The author argues, therefore, for the 

 great advantage of the destruction of all stray dugs. 



Rabies in rats and field mice, B. Galli-Valerio (Centhl. Bakt. [etc.], 1. Aht., 

 <)ri[/., .',2 (1906). A'o.s. 3, pp. 2(l.i-20H ; .',, pp. 291-303, fill. 1). — In a study of rabies 

 in rats and field mice it appears that Negri's bodies are exceedingly rare and 

 small as compared with the same structures in dogs and most other animals 

 susceptible to rabies. The attenuated virus obtained from the medulla oblongata 

 of infected rats and mice did not ah\ays have the power of protecting other rats 

 and mice against the dist^-ise. 



Nagana in poultry, O. Goebel (Coiiipt. Rend. »S'oc. Biol. [Paris], 61 (1906), 

 No. 30, pp. 321-323). — Poultry are considered by most investigators to be im- 

 mune to nagana. Tht> author fotnid, however, that fowls inoculated with nagana 

 virus obtained from guinea pigs retained the virulent blood in the body for a 

 period of nearly 2 months. When removed the virus was found to have re- 

 tained its virulence and to be fatal for guinea pigs. 



Filaria clava in the domestic pigeon, L. G. Neumann (Rev. V6t. [Toulouse]. 

 31 (1906), No. 10, pp. 66l-66.'i. fi(/s. 2). — This parasitic worm was first described 



