Manual of veterinary microbiology / by Professors Mosselman and Liénaux ; translated and edited by R.R. Dinwiddie.

  • Mosselman, Gustave.
Date:
1894
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Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: Manual of veterinary microbiology / by Professors Mosselman and Liénaux ; translated and edited by R.R. Dinwiddie. Source: Wellcome Collection.

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    coming from a diseased chicken kills it in twenty- four hours. Hence, it is a delicate reagent for veri- fying the nature of an epizootic of fowl cholera, but, in order that this experiment should be of real value, it is evidently necessary to carefully avoid all causes of error which may result from the intervention of foreign germs. . The blood of the rabbit which suc- cumbs under such conditions is exceedingly rich in the specific germs. The rabbit can also be infected by way of the digestive canal. Inoculation of a drop of blood from a diseased chicken in the subcutaneous cellular tissue of the guinea pig causes an abscess which heals by evacua- tion of the pus; but inoculation into the blood results in death, the same as in the rabbit and chicken, by blood asphyxia. The pus of the abscess, in the guinea pig, is rich in microbes and its inoculation to chickens or to the rabbit reproduces the disease. It appears from a number of observations that the contact of virulent blood or of a culture with a wound can occasion in man, also, the formation of an abscess, and that the cat and the dog may consume, with impunity, chickens which have died from the disease. Etiology and pathogeny.—The germ of chicken chol- era is deposited on the soil of poultry houses and yards with the fluid dejections of diseased fowls; their entrance into the organism of healthy subjects takes place by way of the digestive canal, the fowls taking up particles contaminated with the gerrns along with their food. The transmission of the dis- ease by ingestion has, moreover, been experimentally proved. Since desiccation and contact with the air