784 EXPERIMENT STATION RECORD. 



the physicians of this country, which, since ]!M)1, lias heen appearing in the 

 vicinity of riiila(leli)liia and in Indiana, Oliio, and other States. 



The disease is characterized by a wide-spread urticarioid eruption accom- 

 panied by intense itching and commonly by mild fever and other systematic 

 symptoms. It is due to contact with cereals or straw infested with I'edictiloides 

 vcntricosus or an allied species of mite. An identical or similar affection from 

 contact with sacks of barley and wheat was noted by naturalists many years 

 ago in France, (iermany, Russia, and certain other European countries. This 

 mite prej's upon insects, particularly grain destroying insects. See also a 

 previous note (E. S. R.. 21, p. HST). 



Special report on Sarcosporidiae and their association with loco disease 

 and dourine, E. A. Watson {Ottaica, Canada: Dcpt. Agr., 1908, pp. 12, pis. 2). — 

 This contribution has especial reference to the association of sarcosporidiosis 

 with loco disease and dourine and the possibility of mistaking the spores of 

 Sarcocystis for certain so-called developmental forms of trypanosomata. Six 

 cases of sarcosporidiosis in cattle suspected of loco poisoning, 2 in equines sus- 

 pected of loco poisoning, 3 in dourine-affected equines, and 1 in a cachectic 

 filly, the cause of the cachexia not being known, are reported. 



The following conclusions are drawn as the result of the investigations: 

 " The parasitic Sarcocystis under certain conditions becomes a very important 

 factor in disease, invading the entire musculature of their hosts, with serious 

 or fatal consequences. Sarcosporidiosis may be closely associated with, and is 

 probably a very frequent sequel to, the disease of horses and cattle known as 

 loco disease. It may complicate the diagnosis of this disease, and also of 

 dourine. and probably of some others, and retard or prevent recovery from these 

 and similar cachectic conditions. The crescentic spores of sarcocystis bear a 

 striking resemblance to crescentic bodies that have been described as develop- 

 mental forms of ti-ypanosomata, and it would be unsafe, or quite erroneous to 

 diagnose an infection by the latter from the presence alone of those crescentic 

 bodies." 



The etiology of dourine, ZwiCK and Fischer {Berlin. Tierdrztl. Wchnschr., 

 25 (1901)). \o. 37. pp. 683-686, figs. 2; abs. in Jour. Trop. Vet. 8ci., 5 (1910), 

 No. 1, pp. 187-189). — This disease had not been seen for 28 years in Germany, 

 but has recently been introduced from Russia. The authors' more recent ex- 

 periments with the trypanosome of Euroi)ean dourine in laboratory test ani- 

 mals seem to show that there is no ground for the opinion that any difference 

 exists between the European and African disease. In the inoculation experi- 

 ments here reported mice, guinea pigs, rabbits, dogs, cats, sheep, a goat, and 

 an ox were used. 



Dourine, Miessner (Berlin. Tierdrztl. Wchnschr., 25 (1909), No. 3Ji, pp. 63Jf- 

 636; ahs. in Jour. Trop. Vet. Sci., 5 (1910), No. 1, pp. 189, Jf90).— This disease 

 has attracted interest owing to an outbreak reported by Toreuz and Kleinpaul 

 in East Prussia in 1908. The guinea pig. rabbit, mouse, and rat were inocu- 

 lated but none of these became infected with dourine. Treatment with arseno- 

 phenylglycin was followed by improvement. 



A method of dealing with rinderpest in the field, A. Gibson (Jour. Trop. 

 Vet. 8ci.. 5 (1910), No. 1, pp. 93-95). — A short account is given of the way in 

 which rinderpest has been successfully dealt with in Hongkong without the aid 

 of a laboratory. 



What Selang'or is doing to prevent rinderpest (Vet. Rec., 22 (1910), No. 

 1128, pp. 561, 568). — An account of the work as carried on in the state of Se- 

 langor. on the Malay Peninsula. Quarantine stations are maintained at Port 

 Sweettenham, Kuala Lumpur, and Kuala Kubu, for the purpose of preventing 

 its spread among cattle. 



