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ANEGADA 172 ANGELES ANEGADA (an-e-ga'da), the most northerly of the Virgin Islands, lying E. of Porto Rico in the West Indies. It contains about 13 square miles, with a scanty population of 200, and belongs to England. A little cotton is grown. ANEMOMETER, an instrument de- signed to measure the velocity of the wind. It was invented by Wolfins in 1709. The anemometer most commonly in use consists of four light metallic hemispheres, called (from Dr. Robinson, who first employed them) Robinson's cups, which are made to revolve like a vane or weather-cock, and are found to do so at the rate of exactly one-third the velocity of the wind. The result is then recorded in pencil marks by a self-registering apparatus. ANEMONE, a genus of plants belong- ing to the order ranunculaceas or crow- foots. A. coronaria and hortensis are common garden flowers. In zoology, it is a popular name given to various radiated animals which present a superficial resemblance to the anemone, but really look more like the chrysan- thenum or some others of the compositse. The anemone, meaning the sea-anemone, is A. mesembryanthemum, called also the bendlet; the snake-locked anemone is the sagartia viduata, and the plumose anem- one is the actinoloba dianthus. ANEMOSCOPE, an instrument for rendering visible the direction of the wind. In that commonly used there is a vane exposed to the wind acting upon an index moving round a dial-plate on which the 32 points of the compass are engraved. ANEROID, not containing any liquid; tjsed chiefly in the expression, "aneroid barometer." An aneroid barometer is a barometer not containing a liquid, but constructed on a totally different principle from a mercurial barometer. Various forms of the instrument exist. One of these con- sists of a cylindrical metal box exhausted of air, and having its lid of thin corru- gated metal. As the pressure increases, the lid which is highly elastic, and has a spring inside, is forced inward; while, again, as it diminishes, it is forced out- ward. Delicate multiplying levers then transmit these motions to an index which moves on a scale, and is graduated em- pirically by a mercurial barometer. From its portability it is much used for de- termining the heights of mountains. ANEURIN (an-u'rin), a poet and prince of the Cambrian Britons, who flourished about 600 A. D., author of an epic poem, the "Gododin," relating thb defeat of the Britons of Strathclyde by the Saxons at the battle of Cattraeth. ANEURISM, a morbid dilatation of the aorta, or one of the other great arteries of the body. ANGARA, a Siberian river which flows into Lake Baikal at its N. extremity, and leaves it near the S. W. end, latterly join- ing the Yenisei as the Lower Angara or Upper Tunguska. ANGEL, a messenger, one employed to carry a message, a locum tenens, a man of business. In a special sense an angel is one of an order or spiritual beings superior to man in power and intelligence, vast in number, holy in character, and thorough- ly devoted to the worship and service of God, who employs them as his heavenly messengers. Their existence is made known to us by Scripture, and is recog- nized also in the Parsee sacred books. The word is also applied to a spirit which has assumed the respect of some human being. Angel is likewise the name of a beauti- ful fish, which has its body covered with large green scales, and the laminae above the gills armed with cerulean spines. It is one of the chaetodons, and occurs on the coast of Carolina. It is quite differ- ent from the Angel Fish {q. v.). In numismatics, an angel is a gold coin, named from the fact that on one side of it was a representation of the Archangel Michael in conflict with the Dragon. The reverse had a ship with a large cross for the mast, the letter E on the right side, and a rose on the left; while against the ship was a shield with the usual arms. It was first struck in France in 1340, and was introduced into England by Edward IV, in 1465, Be- tween his reign and that of Charles L it varied in value from 6s. 8d. to 10s, ANGELES, FELIPE, a Mexican soldief who was executed following a court-mar- tial at Chihuahua City, Mexico, on No- vember 26, 1919. Angeles was one of the few well-trained Mexican army officers. He was born in the State of Hidalgo in 1869, and studied military science in France, devoting special attention to ar- tillery. He wrote a military text book which was widely used in Mexico and elsewhere. He joined the revolution of Madero which resulted in the abdication of President Diaz. Under the command of Madero he carried on important opera- tions against the bandit Zapata. After the fall of Madero he refused to sup- port the government of President Hu- erta and was for a time kept in prison.