Public health laboratory work / by W. Watson Cheyne, W.H. Corfield and Charles E. Cassal.

  • Watson Cheyne
Date:
1884
Catalogue details

Licence: Public Domain Mark

Credit: Public health laboratory work / by W. Watson Cheyne, W.H. Corfield and Charles E. Cassal. Source: Wellcome Collection.

    26/108 page 18
    purified potato, care being taken to prevent the entrance of extraneous organisms during and after the experiment, growth of the bacilli occurs in the fluid or on the surface of the solid substance, in the latter case forming the loose net- work mentioned before. From the first material a second may be inoculated, and then a third, and so on indefinitely till all trace of the original blood is lost except these bacilli. If now an animal be infected with the minutest quantity of these cultivated bacilli the same disease and fatal result follow as when the infective blood was employed. Heat or substances which kill the bacilli render the material harmless when inoculated. These facts show that the bacilli were the cause of the original disease, and as no other bacteria or anything else gives rise to this afTection, the bacilli must be held to be the only cause. Glanders is a disease of horses in which ulcers and nodules are found in the mucous membrane of the nose and nodules in the lungs and other organs. This disease also affects man and other animals, and is almost always fatal. In the diseased parts minute bacilli are present in large numbers. They can be cultivated on gelatinised meat-infusion, potatoes and other materials, and their inoculation on animals gives rise to the same disease. Erysipelas in man is a disease in which there is a spreading redness and inflammation of the skin, sometimes accom- panied by the formation of abscesses. At the spreading margin large numbers of minute micrococci are found in the lymphatic vessels of the skin. These can be cultivated on potatoes, gelatinised meat-infusions, &c., forming whitish masses spreading over the cultivating material. The inoculation of these micrococci as also of erysipelatous pus on the ear of rabbits causes extensive redness, which generally passes off without producing any ill effects, and is followed by peeling of the skin in the same manner as occurs in man. Advanced cancerous and other diseases in man, in an unsuitable condition for operation have been benefited by an attack of erysipelas, and the use of tiiese
    No text description is available for this image
    No text description is available for this image
    No text description is available for this image