Hot Bed
a bed or stratum of stablelitter, tan, dead leaves, leaves, etc., in a state of fermentation, and therefore emitting heat heat, covered with a layer of earth, the whole having a glazed box surmounting it. A hot bed is used for the growth of melons, cucumbers, etc., or to afford temporary protection to seeds unlikely to germinate vigorously in the open air.
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Hot Blast
a stream of air forced through a furnace and heated to 500° or 600°. The combustible gases from the stack are generally used to heat the For this purpose a kind of oven is built near the top of the stack,sur mounted by a kind of chimney which draws off a portion of the inflamed gas. In this oven is a series of pipes through which the air is forced before it enters the stack. The hot blast effects a saving of heat, and accomplishes the reduction of the most refractory ores in less time and with a less expenditure of fuel than the cold blast.
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Hotbed
a frame in which to hasten the early growth of plants. The foundation of the common hotbed is a pit filled with a fermenting, heat-giving substance. Horse manure is considered excellent. The amount should vary with the locality. A depth of eighteen inches is regarded as sufficient for zero weather. This may be covered with a layer of earth in which seeds or slips are planted. The whole is protected with a frame and covered with glass. The top of the frame should slope to the south to catch the rays of the sun. The sash cover should be hinged so that it may be raised for ventilation during the heat of the day. The sash may be covered by matting during cold nights. Hotbeds are less expensive than greenhouses. They are relied on to bring forward young plants of lettuce, cabbage, tomatoes, sweet potatoes, cucumbers, and the like, so as to have them ready for transplanting in the open air when warm weather comes. See Greenhouse
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Hotchkiss
BENJAMIN BERKE- LEY, an American inventor; born in Watertown, Conn., Oct. 1, 1826; was in early life a machinist and turned his attention to the invention of deadly weapons, most notable of which is the HOTCHKISS GUN (q. v.). He died in Paris, Feb. 14, 1885.
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Hothouse
. See Greenhouse
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Houdon
JEAN ANTOINE (ö-dâng'), a French sculptor; born in Versailles, March 20, 1740. After studying ng in in Italy he returned to Paris and executed the busts of Voltaire, Rousseau, Molière, Franklin, Buffon, Catherine II., etc. He became, in 1778, member and professor of the Academy of Fine Arts. He was invited to the United States and carved the statue of Washington , now at the Virginia State capitol in Richmond, which is considered the most authentic likeness of "the father of his country." Houdon died in Paris, July 15, 1828.
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Hough
EMERSON, an American writer; born in Newton , Iowa, in 1857. He graduated from the State University spent several years of Iowa in 1880 and spent in travel and exploration in the West. Largely through his efforts an act of Congress protecting the buffalo in Yellowstone Park was passed. He wrote many novels and descriptive articles on western subjects . These include "The Story of the Cowboy " (1897); "The Girl at the Half-way House" ( 1900); "The Mississippi Bubble" (1902); "The Story of the Outlaw" (1906); " The Way Out" (1918). He also contributed many stories and sketches to magazines.
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Houlton
a town in Maine, the county-seat of Aroostook co. the Bangor and Aroostook and the Canadian Pacific railroads. It is the center of an important farming region and its industries include foundry and machine shops, lumber mills, woolen mills, starch factories , etc. There is a public library, hospitals, parks, a high school, and the Ricker Classical Institute . Pop. (1910) 5,845; (1920) 6,191.
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Hound
a name applied to dogs used in hunting. The true hound , such as the bloodhound, the foxhound , and the staghound, hunt only by scent. In this division may also be included the bassethound (a short-legged dog used in unearthing foxes and badgers ), the beagle, and the harrier. The greyhound and the deerhound run by sight alone, and are not hounds in the correct acceptance of the term.
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Hour
the 24th part of a natural day; the space of 60 minutes. The early Egyptians divided the day and night each into 12 hours, a custom adopted by Jews or Greeks probably from the Babylonians. The day is said to have been first divided into hours from 293 B. C., when L. Papirius Cursor erected a sun dial in the temple of Quirinus at Rome.
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Hour Angle
in astronomy, the angle formed at the pole at the instant of gle observation between the meridian of the plane and the hour circle or circle of declination, passing through the heavenly body. It is measured by the arc of the equator which has passed or will pass under the meridian of the observer between the instant of observation and the moment when the heavenly body is on the same meridian. Called also the horary angle.
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Hour Circle
in astronomy, one of the great circles passing through the poles of the sphere, and necessarily perpendicular to the equator . So called, because to note when the sun reaches each of these circles is a method of ascertaining the hour of the day . Hour circles are called also circles of declination. Also a small brass circle fixed to the north pole of a terrestrial globe , divided into 24 hours, and furnished with an index for pointing them out.
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Housatonic River
a river which rises in Massachusetts , flows through Connecticut, and enters Long Island Sound near Bridgeport. In its course of nearly 150 miles it affords water-power to many manfacturing cities and towns .
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House Fly
in entomology, Musca domestica. The larvæ are called maggots; they live in decaying animal matter. HOUSELEEK Sempervivum tectōrum, natural order Crassulaceæ, a succulent plant, commonly to be met with on old walls. It bears purplish flowers.
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