American Red cross textbook on elementary hygiene and home care of the sick / by Jane A. Delano and Isabel McIsaac.

  • Delano, Jane A., 1862-1919.
Date:
1913
Catalogue details

Licence: In copyright

Credit: American Red cross textbook on elementary hygiene and home care of the sick / by Jane A. Delano and Isabel McIsaac. Source: Wellcome Collection.

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    LESSON II CAUSES AND TRANSMISSION OF DISEASE SUGGESTIONS FOR DEMONSTRATION 1. Show quick-lime and air-slaked lime and demonstrate preparation of milk of lime. 2. Show 5 per cent, solution of carbolic acid and explain the dangers in its use, especially of burning. 3. Show sulphur candles and how to use them for fumi- gation. Show how to close crevices and how to avoid danger of fire during fumigation. Causes of Disease.—The causes of disease are divided into two classes, direct and indirect. The direct causes may be chemical such as poi- sons, mechanical such as injuries, and vital such as the bacteria of special diseases. The indirect causes are age, sex, heredity, race, occupation, climate and habits; as an illustration: the direct cause of tuberculosis is the tubercle bacillus while the indirect causes may be numerous, as age, race, occupation, unsanitary surroundings, and heredity. Resistance to disease varies greatly in individ-