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Updated: April 30, 2025
These toxines eventually kill the micro-organisms that produced them, quite as an animal may be smothered in its own exhalations; or at least they would do so if the "host" survived long enough for the completion of the process. Meantime, they have either killed the "host" or been defeated by certain very interesting natural processes.
In a word, Pasteur showed that all the many familiar processes of the decay of organic tissues are, in effect, forms of fermentation, and would not take place at all except for the presence of the living micro-organisms.
And it should be recalled that Antony von Leeuwenhoek, whose death took place shortly before Newton's, had discovered such micro-organisms as bacteria, had seen the blood corpuscles in circulation, and examined and described other microscopic structures of the body. We have seen how Gilbert, by his experiments with magnets, gave an impetus to the study of magnetism and electricity.
It is the ubiquitous presence of bacteria which makes it impossible to preserve fruits, meats, or vegetables for any length of time without special methods. This fact in itself has caused the development of one of our most important industries. Canning meats or fruits consists in nothing more than bringing them into a condition in which they will be preserved from attack of these micro-organisms.
Expired air contains, besides carbon dioxid, various impurities, many of an unknown nature, and all in small amounts. When the expired air is condensed in a cold receiver, the aqueous product is found to contain organic matter, which, from the presence of micro-organisms, introduced in the inspired air, is apt to putrefy rapidly.
In 1878, followed his study on the "AEtiology of Wound Infections," in which he was able to demonstrate conclusively the association of micro-organisms with the disease. Upon those two memorable researches made by a country doctor rests the modern science of bacteriology.
It is then pressed and dried in the sun, the result being a reddish-brown mass composed of the micro-organisms contained in kumys ferment, casein, and a small quantity of fat.
Nevertheless, from the moment when the tobacco is cut in the fields until the time it is ready for market the curing is very intimately associated with bacteria and fermentative organisms in general. Some of these processes are wholly brought about by bacterial life; in others the micro-organisms aid the process, though they perhaps can not be regarded as the sole agents.
Little is known of that world, save in a general way. We know that out of it arise diseases, new to us, that afflict and destroy man. We do not know whether these diseases are merely the drifts, in a fresh direction, of already-existing breeds of micro-organisms, or whether they are new, absolutely new, breeds themselves just spontaneously generated.
Their air did not contain the bacilli and germs and microbes of disease that fill our own air. And when the white men imported in their ships these various micro-organisms or disease, the Typeans crumpled up and went down before them. When one considers the situation, one is almost driven to the conclusion that the white race flourishes on impurity and corruption.
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