Democratic Sentinel, Volume 17, Number 11, Rensselaer, Jasper County, 31 March 1893 — ABOUT TWILIGHT. [ARTICLE]
ABOUT TWILIGHT.
It I* the Hour When MularU Gets In It* Worst Work. The special danger of the sunset hour In malarial regions may be owing to the following conditions: TJhe microbes or spores concentrate at a level a little above the ground, exactly as one may observe the dust of carriages in the road in a thick horizontal layer settle on a warm, moist evening; then there is no lifting by ascending air currents, but a sort of beating down to a low level, and their coherence is caused by the disposition of vapor on the dust particles as the air cools. Thus, over a dried marsh there would be great condensation of microbes, or slwres, which could no longer disperse. They would gather about the height of a man’s head, just as we sec a ground fog In still, moist air after a warm day in autumn; the organisms were given off while the surface of the ground was warm, and they accumulate a little above it as radiation carries off the* heat and cools the lowest stratum of air. About sunset the earth is still warm and exhales moisture into the air above it, and with the earthvapor organisms are largely given off. The human body is at that time most susceptible to their action, because the rapid cooling of the skin, drives the blood to the inner surfaces of the throat, and these congested inner surfaces favor the innoculation by germs drawn in with the breath. Later in the night the organisms have largely sunk by their own weight and that of deposited dew, and, moreover, the cooled body is not so much open to the attack of germs remaining in the air.—Chicago News Record. Well Sqm one I. Wood for tennis rackets requires at least five years’ seasoning; that is to say, it requires to be kept for five years in the rough timber state before being cut up for use. Wood for pianos is kept, as a rule, for forty years before it is considered sufficlent'jr in condition to be used.
