Ottawa, Ont., April 19, 1907.
To the Editor:
—Pathologists will be interested in the information that the Trypanosoma equiperdum has been found in a mare clinically affected with dourine, or maladie du coit, at the quarantine station established by this department at Lethbridge, Alberta, in 1904. The first demonstration was made by Drs. E. A. Watson and M. V. Gallivan, on Feb. 11, 1907, in material taken from a vesicle on the mucous membrane of the vagina of the animal above referred to, which was found to be affected with dourine on the premises of her owner, Mr. R. Tiffin, near Lethbridge, on Dec. 21, 1906, and subsequently removed to the quarantine station for purposes of experimental observation.The disease was successfully transmitted in February to a yearling filly and the parasite subsequently observed in preparations from a fresh plaque. The finding was confirmed by Dr. C. H. Higgins, pathologist