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LEFT DELPHOS 313 DEMAGOGUE the third magnitude. The names as- signed to its stars Alpha and Beta, Sualocin and Rotanev, are merely re- versals of the name ("Nicolaus Vena- tor") of an astronomer's assistant who wished to commemorate himself. DELPHOS, a city of Ohio, in Allen and Van Wert cos. It is on the Miami and Erie canal, and on the Pennsylvania Company, the Toledo, St. Louis, and Western, the Northern Ohio, the Cin- cinnati, Hamilton and Dayton, and the Ohio Electric railroads. There are rail- road repair shops, granite works, flour and paper mills, and manufactures of iron products, printing presses, furniture, etc. Pop. (1910) 5,038; (1920) 5,745. DEL mo, a city of Texas, the county- seat of Val Verde co. It is on the Gal- veston, Harrisburg and San Antonio railroad. Its notable buildings include a hospital, two convents, and a Federal building. It contains the well-known San Felipe springs. It has cotton gins and other industrial establishments and is the center of an agricultural and cattle raising region. It was incorporated in 1910. Pop. (1920) 10,589. DELSARTE, FRAN9OIS ALEXAN- DRE NICOLAS CHERI (del-sarf), a French educator; born in Solesmes, Dec. 19, 1811. His father, a physician, sent him to Paris to study with a painter on china 1822, but he entered the Conserva- tory 1825. He attained distinction as a tenor singer in the Opera Comique, sud- denly lost his voice, and thereafter ap- plied himself to musical and dramatic in- struction, having among his pupils many who afterward achieved operatic and dramatic celebrity. His chief work was the elaboration of a system of dramatic expression. He aimed to make elocution a science. He died in Paris, July 19, 1871. DELTA, the name of the fourth Greek letter, corresponding with the English d. As a capital it is formed in the shape of an equilateral triangle. Originally applied to the triangle-shaped island formed by deposits between the two mouths of the Nile; afterward applied to other similarly shaped tracts formed at the mouths of large rivers by two or more diverging branches. The deltas of many rivers, as the Ganges, Niger, Mis- sissippi, etc., are geologically most in- structive, exhibiting, as they do, perfect analogues of many of the older forma- ,tions in magnitude, variety of composi- tion, alternation of beds, and entombment of plants and animals. E^LTA METAL, an alloy consisting of copper and zinc — in other words, brass — to which some manganese has been added in the form of ferro-mari- ganese, or spiegeleisen, which contains manganese. A Tittle silicon is also used, but enough of this is usually present in ferro- manganese. Delta metal has sim- ilar properties to phosphor-bronze, if, indeed, some of it is not simply man- ganese-bronze. It is used for parts of machinery and for ornamental work. DELUGE, a general overflowing of water, or inundation; specifically, the general inundation or flood in the time of Noah, Three schools of thought or opinion exist with respect to the deluge. (1) The common one that it was uni- versal not merely as regards the human race, but with respect to the world, every part of which, the highest peak of the Himalayas not excepted, was submerged. (2) That while drowning all mankind except the eight persons in the ark, it was partial, being limited to central Asia. The ordinary mind will consider ths view absurd, and say that the water standing high in Central Asia would run over the world, becoming shallower as it went; but the geologist knows that in such a vast flood what appears to the eye the rising of the waters is really the sinking of the land. If the land subsided in central Asia, cracks extending to the Caspian, the Persian Gulf, etc., a deluge would be produced, while a like upheaval of the land would bring it to a termina- tion. (3) Bishop Colenso considers the deluge unhistorical. The deluge predicted by Noah is de- scribed in Gen. vi. vii. viii. ; dated by Usher and the English Bible 2348 b. c. Traditions of such an event are found among many races. The old view that the fossils collected by the geologists were deposited during the Noachian deluge is now held only by the unenlightened. DELUNDUNG, the weasel-cat (Prio- nodon gracilis), a small quadruped in- habiting the vast forests of the E. ex- tremities of Java and Malacca. It is of pale yellowish-white color, with elegantly-marked stripes and bands of a deep brown. It is allied to the civets, but is destitute of a scent-pouch. DEMADES (de-ma'dez), an Athenian orator, who, from a fishmonger, rose to high places in the republic. He was captured by Philip of Macedon in the battle of Chseronea, but soon set at liberty. He afterward exerted his in- fluence in favor of the Macedonian party at Athens, but, betraying Antipater, he was put to death by Cassander, the son of the latter, 318 b. C. DEMAGOGUE, a ringleader of a faction, or of the rabble; a popular or