Pasteur discovery

Usage examples of germs.

Pearl explains his results by the hypothesis that the alcohol eliminated the weaker germs in the parents, and allowed only the stronger germs to be used for reproduction.

Pearl thinks, that only weak germs are killed by moderate treatment, and the strong ones are uninjured.

All the changes that take place in milk are caused by germs of various sorts, usually floating in the air, that get into it.

If the milk is so handled and protected, from cow to breakfast table, that these germs cannot get into it, it will remain sweet for several days.

This is to prevent the growth of such few germs as may have got into it, in spite of all the care that has been taken.

United States, dirty milk may also contain typhoid germs and consumption germs.

Bread that has not been thoroughly baked, if it is kept too long, will turn sour, because some of the yeast germs that have escaped will set to work again.

This filter-bed consists of a layer of more or less spongy, porous soil, or earth, swarming with millions of tiny vegetable germs known as bacteria.

The other reason is that its contents may contain the germs of serious diseases, particularly typhoid fever and other bowel troubles.

For a time, indeed, it looked as if the new danger were the greater of the two, because, when the typhoid germs were washed into a well, they poisoned or infected only one, or at most two or three, families who used the water from that well.

When left to itself, the process of fermentation in most of these sugary or starchy liquids will come to a standstill after a while, because the alcohol, when it reaches a certain strength in the liquid, is, like all other toxins, or poisons produced by germs, a poison also to the germ that produces it.

Colds are very seldom caught from the cold, pure air of a draft, but nearly always from the germs, or dirt, in the still, foul air of a tightly closed room.

The two latter stir up disease germs resting peacefully on the floor or furniture, and set them floating in the air, where you can suck them into your lungs.

Two-thirds of all colds are infectious, and due, not to cold pure air, but to foul, stuffy air, with the crop of germs that such air is almost certain to contain.

Not only the germs of consumption, but those of pneumonia, colds, catarrhs, diphtheria, and other diseases, can be spread by spitting.