152 Veterinary Ikedicine. 



essential cause, and so now we have the same evidence concerning 

 equine influenza. 



Other testimonies to Contagion. Trasbot says the virulence is 

 ' ' almost equal to that of Rinderpest or aphthous fever, ' ' and 

 adds "all practitioners have become assured that. the bringing of 

 an affected animal into a stable constantly introduces the malady 

 to the others. ' ' Cadeac says ' ' the diseased or infected animals 

 are the main channel of propagation of the malady ' ' and again 

 the disease is "essentially infectious." Friedberger and Frohner 

 are more definite — "influenza which. is as highly infectious as 

 any other disease can be produced only by infection." Cadeac 

 implies nearly as much in saying: "in all the epizootics that 

 have invaded Paris, the disease has been carried into the four 

 quarters of France by horses bought in this city. In most 

 regiments the malady shows itself after the arrival of horses from 

 remounts where it was prevailing. At Sibourne it is through 

 horses from St. Jean d'Angely. At I/yons it is by a horse from 

 Csen. At Bourges the source was not traced but it spread from 

 the garrison to the whole surrounding country. The Omnibus 

 stables in the Rue d'Ulm were invaded when a horse was' intro- 

 duced from Clichy where influenza raged." 



Stables are fruitful sources of infection hence dealers' horses 

 and horses travelling from place to place have long been objects 

 of ju,st suspicion (Trasbot, etc.). 



Cars are often infected, and spread the disease widely. (Poucet, 

 Salle, Trasbot, etc.). 



Manure is especially dangerous. Trasbot gives a number of 

 cases of the infection of farms, by the manure taken from the 

 Alfort Veterinary College, and other infected stables in Paris. 

 Friedberger conveyed the disease experimentally in the manure. 



The conveyance of the virus on the clothes of atteiidants has 

 been alleged by Friedberger and Frohner, and considering that 

 it has been noted to pass over intervals of about half a mile with- 

 out the intervention of any horse, it must have been wafted on 

 the air, or conveyed on the surface of man or non-equine beast. 



Jensen and Clark allege that the contagium may be conveyed 

 to mares by coition, for months after the stallion has shown all 

 outward signs of recovery. This would be entirely in keeping 

 with the analogous fact in swine plague. 



