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He had the honor to take part in one of these, and in accepting it he well knew the difficulties of the task before him, for hardly anything was known about the cholera poison, or where it should be sought; whether it was to be found only in the intestinal canal, or in the blood, or elsewhere. Nor was it known whether it was of bacterial nature, or fungoid, or an animal parasite e.g., an amoeba.
If I can keep the specific micro-organism that causes hog-cholera off my place, I need not fear the disease. The same is true of swine plague. These diseases are of bacterial origin, and are communicated by the transference of bacteria from the infected to the non-infected. I propose to keep my healthy herd as far removed as possible from all sources of infection.
As can be seen from the foregoing description, the fermentation and bacterial action that takes place in a properly built septic tank system is automatic and needs no attention, although every second or third year it is advisable to remove the mud-like sediment from the tank. Otherwise, the latter's capacity gradually diminishes.
The vaccines, serums and antitoxins of medical science are prepared from these bacterial excrements and from extracts made of the bodies of bacteria.
It is this continued circulation that makes life possible still, and it is only this fact that the food is thus capable of ever circulating from animal to plant and from plant to animal that makes it possible for the living world to continue its existence. But, ah we have seen, one half of this great circle of food change is dependent upon bacterial life.
Twenty-first century Earth had not realized the degree to which it depended upon its effective antibiotic products for maintenance of its health until the mutating immune bacterial strains began to outpace the development of new antibacterials. Early penicillin killed 96 per cent of all organisms in its spectrum at first but time and natural selection undid its work in three generations.
Wood-wool dressings are more highly and more uniformly absorbent than cotton wools. As evaporation takes place through wool dressings, the discharge becomes dried, and so forms an unfavourable medium for bacterial growth.
All of these processes are factors in the formation of soil. Beyond much question the rock disintegration which occurs everywhere in Nature is chiefly the result of physical and chemical changes, but there is reason for believing that the physical and chemical processes are, to a slight extent at least, assisted by bacterial life.
If I were H. Wellington Jones and it were my fate to die of poison I could frame a nobler end for myself. "Mr. H. Wellington Jones," I would have it read, "died yesterday of some mysterious form of bacterial poisoning contracted while turning over the pages of an old family Bible which he was accustomed to consult at frequent intervals. Mr.
Thus while the bacteriologist has no concern directly with any disease that is not of bacterial origin, the pathologist has a direct interest in every form of disease whatever; in other words, bacteriology, properly considered, is only a special department of pathology, just as pathology itself is only a special department of general medicine.
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