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Bacteria   /bæktˈɪriə/   Listen
Bacteria

noun
1.
(microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants.  Synonym: bacterium.



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"Bacteria" Quotes from Famous Books



... I have endeavoured to arrange briefly and concisely the various methods at present in use for the study of bacteria, and the elucidation of such points in their life-histories as are debatable ...
— The Elements of Bacteriological Technique • John William Henry Eyre

... the Roman treatises on farm management is profitable to the modern farmer however practical and scientific he may be. He will not find in them any thing about bacteria and the "nodular hypothesis" in respect of legumes, nor any thing about plant metabolism, nor even any thing about the effects of creatinine on growth and absorption; but, important and fascinating as are the illuminations of modern science upon practical agriculture, the intelligent farmer ...
— Roman Farm Management - The Treatises Of Cato And Varro • Marcus Porcius Cato

... individuals being once appreciated, it follows that a book on hygiene must deal, not only with the question of individual living, but also with those broader questions having to do with the cause and spread of disease, with the transmission of bacteria from one community to another, and with those natural influences which, more or less under the control of man, may affect a large area if their natural destructive tendencies ...
— Rural Hygiene • Henry N. Ogden

... it is the specific—has been ascribed to a decomposition effected by the carbonic acid which is given off from these ulcers. This releases chloric acid, which, being an extremely powerful antiseptic, kills the bacteria to which ...
— Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 - "Chitral" to "Cincinnati" • Various

... the cause of fever is a specific one, either in the form of bacteria (living organisms), as in glanders, tuberculosis, influenza, septicemia, etc., or in the form of a foreign element, as in rheumatism, gout, hemaglobinuria, and other so-called diseases of nutrition, we employ ...
— Special Report on Diseases of the Horse • United States Department of Agriculture

... ever use that phrase with such sinister meaning, or did it signify a better land to them? I shall go West in good hope that I shall return, and meantime will try to develop a strong propaganda in favor of race suicide in the land of the bothering bacteria, Adios. ...
— The Letters of Franklin K. Lane • Franklin K. Lane

... differ very much in size. The great majority of them are invisible to the naked eye, and can be seen only through the microscope (being as a rule between 1/2500 and 1/250 inch in diameter). There are many of the smaller plastids—such as the famous bacteria—which only come into view with a very high magnifying power. On the other hand, many cells attain a considerable size, and run occasionally to several inches in diameter, as do certain kinds of rhizopods among the ...
— The Evolution of Man, V.1. • Ernst Haeckel

... premises. The man told me that the catch basin was "reeking with the germs of disease." I did n't see how that could well be, since the sewer had not been laid six weeks. However, the man insisted, and he talked so portentously of bacteria and bacilli and morbiferous microbes that finally in a terror of apprehension I gave him four dollars and bade him do his saving work and ...
— The House - An Episode in the Lives of Reuben Baker, Astronomer, and of His Wife, Alice • Eugene Field

... we read about in the scripture enriches the soil for the next crop. As a forest dies, a new crop of trees spring up. Even a dead tree gives rise to a whole creation of countless bacteria and fungi. ...
— Northern Nut Growers Association Report of the Proceedings at the 44th Annual Meeting • Various

... water is such a ready solvent, it contains many foreign materials. In passing through the air and in flowing through the ground, it dissolves many substances. Some of these substances are harmless, while some contain disease bacteria and are dangerous. Well water is frequently contaminated. It is often not safe to use ...
— School and Home Cooking • Carlotta C. Greer

... 6 P.M. Microscopic examination of blood corroborative of Metschnikoff's theory of fighting leucocytes. White corpuscles gorged with bacteria. ...
— "Where Angels Fear to Tread" and Other Stories of the Sea • Morgan Robertson

... but under some circumstances it may be lactic acid, or the rancid-smelling butyric acid. Kismet! The planter trusts to nature to provide the right kind of fermentation. This fermentation is set up and carried on by the minute organisms (yeasts, bacteria, etc.), which chance to fall on the beans from the air or come from the sides of the receptacle. One yeast-cell does not make a fermentation, and as no yeast is added a day is wasted whilst any yeasts which happen ...
— Cocoa and Chocolate - Their History from Plantation to Consumer • Arthur W. Knapp

... of George and Harry. Theory and practice. Fermentation. How heat develops germs. Bacteria. Harmless germs. Tribes of germs. Septic system of sewage. The war between germs. Setting germs to work. Indications from the vegetable world as to the climate. Prospecting in the hills. Tanning leather. Bark, and what it does in ...
— The Wonder Island Boys: Exploring the Island • Roger Thompson Finlay

... explains many of the facts connected with the development and reproduction of infectious diseases, that it has been unqualifiedly adopted by a large number of investigators. The proofs of this theory had not, however, advanced beyond the demonstrations of the presence of certain forms of bacteria in the pathological changes of a very limited number of infectious diseases, until February, 1882, when Koch announced his discovery of the tubercle bacillus, since which time nearly every disease has its supposed microbe, and the race is, indeed, swift in which the would-be ...
— Scientific American Supplement, No. 787, January 31, 1891 • Various

... the patient's back, with its dark blue wings covered with silvery scales, widely expanded. The patient was not anemic and appeared to be in the best of health. None of the glands were affected. According to Thomson there is little doubt that this disease is caused by non-pyogenic bacteria gaining access to the sweat-glands. The irritation produced by their presence gives rise to proliferation ...
— Anomalies and Curiosities of Medicine • George M. Gould

... short time the bodies of the Outsiders began to decay, and the humans were forced to demand their removal. The machines were unaffected by them, but the rapid change told them why it was that so thorough an execution was necessary. The foreign bacteria were already at work on totally ...
— The Last Evolution • John Wood Campbell

... to 3,200 A which cause sunburn, prematurely age human skin and produce skin cancers. As early as 1840, arctic snow blindness was attributed to solar ultraviolet; and we have since found that intense ultraviolet radiation can inhibit photosynthesis in plants, stunt plant growth, damage bacteria, fungi, higher plants, insects and ...
— Worldwide Effects of Nuclear War: Some Perspectives • United States Arms Control and Disarmament Agency

... only this one, wondering just how deep the paradox lay. Then he tipped the bottle up and poured, and the liquid from the cylinder ran down into the tide pools and eddied there and was lost in the liquid of the ocean. He poured until the bottle was empty and all the single-celled bacteria from the ship's tank mingled with the warm, ...
— An Empty Bottle • Mari Wolf

... common diseases of scarlatina, measles and chickenpox. Of some diseases, the virus is a bacillus or coccus, excessively minute fungi recognizable only under the microscope; but the bacteriologists are now beginning to speak of viruses so impalpable that they, unlike ordinary bacteria, can go through the pores of a clay filter, are filter-passers, that is are of ultra-microscopic dimensions. Some authorities conjecture that the virus of variola belongs to the group of filter-passers. The virus of smallpox, ...
— Popular Science Monthly Volume 86

... bring with you to the x to-morrow a little bottle full of fluid containing the bacteria you have found developed in your infusions? I mean a good characteristic specimen. It will be useful to you, I think, if I determine the forms with my own microscope, and make drawings of them ...
— The Life and Letters of Thomas Henry Huxley Volume 2 • Leonard Huxley

... had time and space to describe some of the beautiful bacteria and gigantic worms that formerly inhabited the earth. Such an aggregation of actual, living Silurian monsters, any one of which would make a man a fortune to-day, if it could be kept on ice and ...
— Remarks • Bill Nye

... recently made experiments have shown that the protein of the nut and the protein of vegetables in general is not so putrescible as the protein of meats. There are good reasons for it. It does not undergo putrefaction so readily any way, and besides meat carries along with it the bacteria which produce putrefaction. ...
— Northern Nut Growers Association Report of the Proceedings at the Sixth Annual Meeting. Rochester, New York, September 1 and 2, 1915 • Various

... now thought to be due to parasites of various kinds, such as bacteria, microbes, etc., with which the victim often swarms, and which feed on his tissues, multiplying with enormous rapidity. Such diseases are small-pox, intermittent and yellow fevers, etc. Consumption, or tuberculosis, ...
— An Introduction to Chemical Science • R.P. Williams

... and Addresses," T.H. Huxley, F.R.S., p. 239. So much is this the case, that it is really superfluous, however interesting, to recall the experiments of Dr. Tyndall and others, which finally demonstrated that wherever primal animal forms, bacteria and other, "microbes," were produced in infusions of hay, turnip, &c., apparently boiled and sterilized and then hermetically sealed, there were really germs in the air enclosed in the vessel, or germs that in one form ...
— Creation and Its Records • B.H. Baden-Powell

... red weed succumbed almost as quickly as it had spread. A cankering disease, due, it is believed, to the action of certain bacteria, presently seized upon it. Now by the action of natural selection, all terrestrial plants have acquired a resisting power against bacterial diseases—they never succumb without a severe struggle, but ...
— The War of the Worlds • H. G. Wells

... Schreiber's room, and how long the sword had been in it; and allowing that there is no porosity in tempered steel, still, the black velvet casing of the handle might have absorbed a considerable amount of Schreiberian bacteria, bacilli, or whatever it is that physiologists assert to be so nasty and so ubiquitous, and so set on finding out our weak places and hitting us there, ...
— In Troubadour-Land - A Ramble in Provence and Languedoc • S. Baring-Gould

... and to be quick about it. The janitor's duties, the Board of Health's duties, the milkman's duties, resting upon each one of us individually with the accumulated weight of every cubic foot of vitiated air, and multiplied by the number of bacteria in every cubic centimeter of milk. The motorman's duties, and the duty of every spry citizen not to allow himself to be run over by the motorman. The obligation of teachers in the public schools to supply their pupils with all the aptitudes ...
— Humanly Speaking • Samuel McChord Crothers

... months, receiving then two injections. This is for soldiers, whereas civilians are usually innoculated about once every three years, if it is desired that they should be kept immune from typhoid. He says they use with best results the system of Dr. Vidal, of Paris, employing a serum in which the bacteria have been destroyed by heat rather than by boiling. They find the effect of this serum much better than that of others. He says that tuberculosis does, of course, exist, because tuberculosis exists among most civilized peoples. There is even more tuberculosis now among the troops than at the ...
— A Journey Through France in War Time • Joseph G. Butler, Jr.

... description of the ruins of eastern America. Although the Martians who survived terrestrial bacteria have left the planet, astronomical observations show a recurrence on the red planet of the same lights that were a prelude to the first onslaught. The conclusion is inevitable: a second invasion is on the way. Serviss pictures the gathering together of the most famous scientists of the day—Edison, ...
— Edison's Conquest of Mars • Garrett Putnam Serviss

... something on a glass slide and slip it under a microscope. My poems are like that. The words are the bacteria. Few can ...
— The Crimson Tide • Robert W. Chambers

... and his colleague, Cave-of-the-Winds, collect bacteria; while the fashionable young men of the day, with a few exceptions, are collecting headaches, regrets, weak nerves, tremens, paresis—death. Of course we shall all die (I will admit that), and further, we may be a long time dead (I will admit that), and ...
— Little Journeys to the Homes of the Great, Volume 4 (of 14) - Little Journeys to the Homes of Eminent Painters • Elbert Hubbard

... with the microscopical observations made by Koch, who states that the micro-organisms in the soils he has investigated diminish rapidly in number with an increasing depth; and that at a depth of scarcely 1 meter the soil is almost entirely free from bacteria. ...
— Scientific American Supplement, Vol. XIX, No. 470, Jan. 3, 1885 • Various

... emitted by the sun and naturally filtered in the upper atmosphere by the ozone layer; UV radiation can be harmful to living organisms and has been linked to increasing rates of skin cancer in humans. water-born diseases - those in which the bacteria survive in, and is transmitted through, water; always a serious threat in areas with an ...
— The 2003 CIA World Factbook • United States. Central Intelligence Agency

... the hospitals of the city were supplied in the same manner; and the result had been, be said, to diminish the mortality of the sick one-half; for the air so brought to them was perfectly free from bacteria and full of all life-giving properties. A company had been organized to supply the houses of the rich with his cold, pure air for so much a thousand feet, as long ago illuminating gas ...
— Caesar's Column • Ignatius Donnelly

... Importance of nitrogen, phosphoric acid, and potash in a soil 88 Chemical condition of fertilising ingredients in soils 89 Amount of soluble fertilising ingredients in soils 90 Value of chemical analysis of soils 90 III. Biological properties of a soil 92 Bacteria of the soil 92 ...
— Manures and the principles of manuring • Charles Morton Aikman

... communication with the blood-stream, due to extensive haemorrhage, bacteria from the outside gain entrance, this simple inflammation is further complicated by the formation of pus, or a limited gangrene of ...
— Diseases of the Horse's Foot • Harry Caulton Reeks

... from putrefactive bacteria, and do not readily undergo decay either in the body or outside of it. Meats, on the other hand as found in the markets, are practically always in an advanced stage of putrefaction. Ordinary fresh, dried or salted meats contain from three ...
— Northern Nut Growers Association Report of the Proceedings at the 13th Annual Meeting - Rochester, N.Y. September, 7, 8 and 9, 1922 • Various

... you the whole story. I don't know it. To be brief, the soil is highly nitrogen deficient, and completely lacking in humus. In a way, the two points tie in together." He looked about him sharply, and then went on. "The nitrates are easily leached from the soil. Without the bacteria that grow around certain roots to fix nitrogen and form new nitrates, ...
— Shepherd of the Planets • Alan Mattox

... the rate of twenty-five large wagon loads to the acre. If you can get a suitable plot that has been in red clover, alfalfa, soy beans, or cowpeas for a number of years, so much the better. These plants have on their roots nitrogen-fixing bacteria, which draw nitrogen from the air. Nitrogen is the great meat-maker and forces a prolonged and rapid growth ...
— Three Acres and Liberty • Bolton Hall

... overcoming tremendous difficulties, the scientists succeeded in developing a microscope kinematography which multiplies the dimensions a hundred thousand times. We may see on the screen the fight of the bacteria with the microscopically small blood corpuscles in the blood stream of a diseased animal. Yes, by the miracles of the camera we may trace the life of nature even in forms which no human observation really finds in the outer world. Out there it may take weeks for the orchid to ...
— The Photoplay - A Psychological Study • Hugo Muensterberg

... makes a start toward being a Pure Food Expert, through a study of "physical and chemical changes induced in food products by the growth of molds, yeasts, and bacteria," and a start toward being a Health Officer, through a study of "bacteria in their relation to disease, sources of infection, personal ...
— Stories from Everybody's Magazine • 1910 issues of Everybody's Magazine

... between the numbers of bacteria, spores, &c., present in the air, and the occurrence of diarrhoea, dysentery, cholera, ague, or dengue, nor between the presence or abundance of any special form or forms of cells, and the prevalence of any of ...
— Fungi: Their Nature and Uses • Mordecai Cubitt Cooke

... far) from those dreadfully fatal diseases that destroy so many swine. 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. I have carried these precautions so far that I am often scoffed at. I require my swineherd, when returning from a fair or a stock show, to take a full bath ...
— The Fat of the Land - The Story of an American Farm • John Williams Streeter



Words linked to "Bacteria" :   micro-organism, resistance, immunologic response, Neisseria gonorrhoeae, gonococcus, acidophil, diplococcus, legionella, microbiology, Legionella pneumophilia, Gram-positive, eubacterium, rod, Gram-negative, acidophile, nitrobacterium, probiotic bacterium, peritrichous, probiotic, superbug, probiotic microflora, Calymmatobacterium, genus Calymmatobacterium, immune reaction, Francisella, probiotic flora, bioremediation, genus Francisella, microorganism, immune response, bacteroid, microphage



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