Word: insects
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...improvement in public health and well-being are closely associated with the development of engineering means for the control and improvement of the environment. The spread of intestinal diseases has been checked by water supply and sewerage works and by the sanitary production and distribution of foods; insect-borne diseases have yielded to proper engineering measures for the control of insects and their animal hosts; and it is hoped that many of the respiratory diseases will suffer marked reduction by devising engineering means for the control of the air supply of enclosed occupied spaces. It should be evident that public...
...hundred pound bag of wheat with unimpaired efficacy. When the process is complete, the gas is exuded by release of a safety valve and carried off by means of a fan in the outlet pipe. The tapestries and furniture are then removed, having been thoroughly fumigated and all insect matter killed...
...memorable passages include an incident when the author, in an agony of loneliness, heard lovers in a field at night, crept close to listen; a terrible glimpse of a man whose nose had been blown away, breathing through two red rubber tubes that gave him the appearance of an insect; a description of a nurse who, in a world of dying men, began to complain of an earache. The Diary of Our Own Samuel Pepys is a two-volume affair running to 1,271 pages, covering the period from June 7, 1911 to Dec. 31, 1934. Since it was written...
...MacBride, however, this does not show that habits acquired by an individual in adapting itself to new circumstances may not be inherited. Lately he reported on habit transmission in the British stick-insect. This creature feeds exclusively on privet, but on the verge of starvation will eat ivy. Dr. MacBride and his associates starved a number of the insects until they ate ivy, then tested succeeding generations. Of the parents only 10% would eat ivy in the first two days, but 80% of the offspring ate it in the same period, although they were isolated from birth and hence removed...
...fluid and enable the fly to traverse vertical surfaces and ceilings. But as a magnet picks up nails, those pads pick up germs which are shed at every step. The appalling trail of potential infection which a restless fly leaves may be shown, the Institute stated, by causing the insect to walk across glass surfaced with sterile gelatin. Soon the footprints are visible under the microscope-outlined by teeming colonies of bacteria...