150 Veterinary Medicine. 



I^ava Beds, Cat (4th week) ; Baker City (2d week), Jackson- 

 ville, Ore. (4th week) ; Walla Walla, Wash. (4tli week) ; Aca- 

 pulco (ist week), Max. 



May. Eugene City, (3d week), Dallas and Portland, Ore. 

 (4tli week) ; Olympia, Wash. 



June. Seattle, Wash. (3d week). 



July. Guatemala City, Guatemala (2d week), Victoria, 5. C. 



August. TuiSL Union, San Salvador (ist). 



Among the deductions from this record are : 



I. The affection advanced gradually from Toronto over the 

 whole continent of North America, where horses are kept, taking 

 full ten months to accomplish this. Nothing checked its advance, 

 over lowland and highland, swamp and arid land, in summer as 

 in winter, with a temperature at o" or at 100° F., in country 

 pasture or in city street or stable, idle or overworked, on all kinds 

 of soils and geological formations, under all successive conditions 

 of meteoric and terrestrial electricity, in all conditions of the 

 air — pure, impure, dense, light, moist and dry. No one con- 

 dition of the environment operating on the animal system, can 

 be conceived of, that could advance as this disease did from place to 

 place in regular sequence for this length of time. 



2d. The rapidity of its progress was manifestly subordinate to 

 the activity of the movement of the equine races from points al- 

 ready infected. Its most rapid advance was along the lines of 

 railway while the back districts shut out from railway traffic were 

 much later in being invaded. The larger cities situated on the 

 through railroad routes suffered earlier than the smaller places on 

 the same lines. The outbreak was several days earlier in 

 Montreal than in the nearer and smaller cities of Kingston, 

 Ottawa, Belleville, Port Hope, Peterboro, Stratford, Brantford, 

 Guelph, London and Owen Sound. The important port of St. 

 John, N. B., suffered two weeks earlier than Quebec. Along the 

 N. Y. Central and Erie Railways, etc., Boston and New York 

 suffered nearly a week earlier than Utica, Poughkeepsie, Bing- 

 hampton, Elmira, and Jamestown, while the smaller places like 

 Kingston, Nyack, Ithaca, etc., were later still. In Baltimore the 

 disease was seen a day earlier than in Philadelphia, and in these 

 cities and Washington over a fortnight before it was seen in 

 Scranton, Pa. So it was almost everywhere and in these large 



