A Hand-book, Or, Concise Dictionary of Terms Used in the Arts and Sciences

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J. Murray, 1825 - 451 sider
 

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Side 187 - Insects, which in their several changes belong to several of the before-mentioned divisions, may be considered together as one great tribe of animals. They are called insects, from a separation in the middle of their bodies, whereby they are, as it were, cut into two parts, which are joined together by a small ligature; as we see in wasps, common flies, and the like.
Side 68 - Why is the science of chemistry so named? Because of its origin from the Arabic, in which language it signifies " the knowledge of the composition of bodies." The following definitions of chemistry have been given by some of our best writers : — " Chemistry is the study of the effects of heat and mixture, with the view of discovering their general and subordinate laws, and of improving the useful arts."— Dr.
Side 125 - A little circle whose centre is in the circumference of a greater ; or a small orb, which, being fixed in the deferent of a planet, is carried along with its motion ; and yet, with its own peculiar motion, carries the body of the planet fastened to it round about its proper centre.
Side 324 - A plantation of trees, disposed originally in a square consisting of five trees, one at each corner and a fifth in the middle, which disposition, repeated again and again, forms a regular grove, wood, or wilderness ; and when viewed by an angle of the square or parallelogram, presents equal or parallel alleys.
Side 284 - Peristylium, a continued row or series of rows of columns all round a court or building, in contradistinction to porticoes, in which the pillars did not surround a space, but were arranged in one or more parallel lines Peritrochium, in mechanics, a wheel or circle concentric with the base of a cylinder, and moveable together with it about an axis : the axis, with the wheel and levers fixed in it, to move it, constitute that mechanical power called axis...
Side 381 - Square-rigged, in navigation, an epithet applied to a ship that has long yards at right angles with the length of the deck, in contradistinction to sails extended obliquely by stays...
Side 101 - Day, (astronomical,) the time between two successive transits of the sun's centre over the same meridian, which always begins and ends at noon.
Side 192 - An assignment of the government share of the produce of a portion of land to an individual.
Side 5 - A poem, in which the first letter of every line being taken, makes up the name of the person or thing on which the poem is written.
Side 432 - The reason for putting the helm a-weather, or to the side next the wind, is to make the ship veer before it when it blows so hard that she cannot bear her side to it any longer. Veering, or wearing, is the operation by which a ship, in changing her course from one board to the other, turns her stern to windward : the French term is virer vent arriere.

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