872 
EDITORIAL. 
a well closed stable in the evening before sunset and not allow 
them to go out in the morning until after sunrise. It is the ap¬ 
plication of the prophylaxy of paludism in man to horse sickness 
of horses which the Boers knew of. A variety of mosquito 
(anophiles) is the agent of propagation of paludism, as has been 
demonstrated by Eaverau and practically proved by Patrick 
Hanson and by Grossi, and by comparison with them it is 
proper to think that probably ‘ horse sickness,’ is also like palu¬ 
dism, due to the sting of some noctambulist insect which is yet 
unknown. What is the virulent agent is yet ignored. All that is 
known is that the blood of the ticks is virulent, and that in¬ 
oculated in minute quantity it gives rise to the disease with its 
ordinary fatal end, its symptoms and its lesions. And not only 
is it virulent, but conserves its virulency almost forever.” 
Nocard has produced the disease with blood that he had 
kept for five months and for two years and four months. 
What is the agent of this so well marked and lasting viru¬ 
lency? To this date no one can tell, and all researches and ex¬ 
periments to cultivate it have failed. 
Until lately, all attempts at treatment or vaccination have 
been without results. In a recent work, Eddington related ex¬ 
periments which he has made and which seem to be encour¬ 
aging. In mixing virus treated with care with a quantity of 
serum from horses highly immunized, he has succeeded in pol¬ 
luting 14 horses out of 23. These experiments were, however, 
made in the laboratory and it will take some time before they 
can be applied in practice. 
The observations and experiments of Eddington are found 
in extenso in the Journal oj Comparative Pathology , by Prof. J. 
McFadyeau. 
* 
* * 
Septic Vibrio and the Bacteria of Symptomatic 
Anthrax ( Bacterium Chauvosi ) present morphologically 
close resemblances. The well known etiological conditions 
that predominate in the development of gangrenous septicaemia 
are found in symptomatic anthrax, and the lesions of those two 
