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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 edition. Excerpt: ...kept up for some weeks, the mass of bacteria would be as large as the earth. Of course, this would mean that each bacterium had plenty of room to live in and plenty of food to live on and nothing to injure it. These conditions are not found, and each bacterium has to struggle for existence just as every other plant does. As it is, however, bacteria are numberless. Since bacteria and fungi cause the "spoiling " of food, it is necessary to find means of stopping their growth. It has been found that thoroughly smoking fish and meat preserves it; that salt acts as a preservative; that if fruit is heated to a boiling temperature and tightly sealed in cans it will keep, and that fruits do not spoil if placed in strong sugar sirups. These and many other methods are used to keep bacteria away from food and to prepare the food in such a way that bacteria cannot live in it. It is found that bacteria do not thrive as well if placed where it is cold, so foods are kept in cold places. Many bacteria cannot stand the sunlight; that is one of the reasons why it is so much more healthful to live in sunny rooms. Steam is sufficient to kill bacteria as they usually exist. Under some conditions they can, however, withstand a greater temperature than that required to boil water. We found that they did not pass through absorbent cotton. It has been discovered that certain substances, like formaldehyde and hydrogen peroxide, prevent their growth. These substances are called disinfectants. Certain bacteria thrive in the living flesh; it is therefore necessary to disinfect cuts or else blood poisoning, which is a bacterial disease, may set in. Sometimes when a rusty nail is run into the hand or foot, if the wound is not properly disinfected and cared...
| ISBN-13 | 9781152466227 |
|---|---|
| ISBN-10 | 1152466224 |
| Weight | 0.68 Pounds |
| Dimensions | 9.00 x 6.00 x 0.47 In |
| List Price | $19.99 |
| Format | Paperback |
|---|---|
| Pages | 204 pages |
| Publisher | |
| Published On | 2010-01-01 |
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