The principles of health control . he destruction of germs. These include: i. Heat. Germs are easily destroyed by heat, most ofthem being killed by a boiling temperature. To thoroughlyboil infected articles, clothing, or foods in water is to des-troy their germs. Dry heat and steam are also is usually the best method of destroying the germscontained in rubbish and household articles of little value (Fig- 77)- 2. Drying. Drying checks the growth of all germs andthorough drying kills most of the germs which causedisease. Dampness, on the other hand, tends to keepthem alive. To
The principles of health control . he destruction of germs. These include: i. Heat. Germs are easily destroyed by heat, most ofthem being killed by a boiling temperature. To thoroughlyboil infected articles, clothing, or foods in water is to des-troy their germs. Dry heat and steam are also is usually the best method of destroying the germscontained in rubbish and household articles of little value (Fig- 77)- 2. Drying. Drying checks the growth of all germs andthorough drying kills most of the germs which causedisease. Dampness, on the other hand, tends to keepthem alive. To avoid dampness is of special importancein the home. Rooms which, by sunning and airing, arekept thoroughly dry do not serve as harboring places forgerms. GERM FIGHTING: OFFENSIVE METHODS 363 3. Light, especially direct sunlight, is an importantdestroyer of germs. 4. Several kinds of chemical agents, referred to as disin-fectants and germicides (germ killers) are extensively usedin destroying germs. These are especially valuable in. Fig. 77.— Fire Destroys Germs. One of the first known of themethods of preventing the spread of disease, burning is still the bestway of disposing of many kinds of infectious material. disinfecting discharges from the body, in destroying germsupon the hands or the person generally, and in the finalclean-up of the home following convalescence from someinfectious disease. Some of the more important of theserequire special mention. Valuable Germicides. — Germicides which may be used aboutthe home, provided one exercises care in their storage and use,include the following: 1. Bichloride of mercury, or cbrrosive sublimate. This is usedin strengths of one-half drachm (30 grains) to one gallon of is especially valuable for disinfecting the hands and for washing 364 PRINCIPLES OF HEALTH CONTROL woodwork. It is destructive to metals, and for this reason shouldbe kept in and used from glass, porcelain, or wooden vessels. It ishighly poisonous and
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecthygiene, bookyear1920
