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varies between light and citron yellow. The spots they form de' 
velop themselves in width and -in rounded spaces. They grow 
slowly, more rapidly in gelatine than in the serum of the blood of 
the horse. The cultures to succeed need the contact of the air, 
therefore are formed by an aerobic microbe, which has the form 
of round bacillus of small dimensions. Inoculating under the 
skin of the pectoral regions of a four-year old horse, the culture 
of this microbe has given rise to a very painful inflammatory 
oedema. This developed into a circumscribed tumor, which be¬ 
came indolent and spontaneously ulcerated in two* places. The 
Openings gave escape to a rosy liquid, mixed with little yellow 
amd whitish masses. This only proves that the inoculated fluid 
had[ pathogenic properties. Mr. L. goes further; he considers 
the o void bacilli as the pathogenic element or influenza .—Gazette 
Medicule. 
UPON TUIE MICROBE OF CONTAGIOUS PLEURO-PNEUMONIA. 
V 
By Prof. Ltjstig, of Hanover. 
Researches diave recently been made by the author to discover 
the pathogenic mAerobe of contagious plenro-pneumonia. In ap 
propriate cultures dm has placed portions of recently inflamed 
lungs, lymph obtained from the interlobular connective tissue. 
He has succeeded in separating, in a condition of pure cultures, 
four varieties of microbes’., viz.: 
1. A bacillus which liqiupfies the gelatine of culture and forms 
upon the edges of the Hquefieil zone pulverulent masses of a whit¬ 
ish-gray color. As soon as thm gelatine is entirely liquefied the 
bottom of the glass is filled with a , deposit of powder of similar 
nature. The liquefied gelatine whidh is on the top either keeps 
its natural yellow tint, slightly cloudy:, or, less frequently, is al 
most colorless and clear; while again fit may present a red or 
green tint with more or less transparency!. These variations of 
color depend on the proportions in which the? other varieties of 
microbes exist in the cultivations. The microbes nf the first kind 
are always more numerous and destroy the others im time. They 
appear as thick and short rods. 
2. A microbe which does not liquefy the gelatine, bi s it forms 
