. Pathogenic micro-organisms, including bacteria and Protozoa; a practical manual for students, physicians and health officers. Colonies of bacillus anthracis upon gelatin plates: a, at the end of twenty-four hours; b, at theend of forty-eight hours. X SO. (F. Fliigge.) the bodies of living or dead animals; but spores may be found inthe fluids containing the bacilli when these come in contact with theair, as in bloody discharges from the nostrils or from the bowels of thedead animal. There are certain non-spore-bearing species of anthrax. Spore-less varieties have also been produced artificial
. Pathogenic micro-organisms, including bacteria and Protozoa; a practical manual for students, physicians and health officers. Colonies of bacillus anthracis upon gelatin plates: a, at the end of twenty-four hours; b, at theend of forty-eight hours. X SO. (F. Fliigge.) the bodies of living or dead animals; but spores may be found inthe fluids containing the bacilli when these come in contact with theair, as in bloody discharges from the nostrils or from the bowels of thedead animal. There are certain non-spore-bearing species of anthrax. Spore-less varieties have also been produced artificially by cultivating thetypical anthrax bacillus under certain conditions, among which maybe mentioned the addition of antiseptics, as carbolic acid, and ofcontinued high temperature (43° C). Varieties differing in theirpathogenic power may also be produced artificially. Pasteur pro-duced an attenuated virus by keeping his cultures for a consider-able time before replanting them upon fresh soil. Anthrax cultures containing spores retain their vitality for years;in the absence of spores the vitality is much more rapidly lost
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