Collier's New Encyclopedia

A complete general encyclopedia of 1921 — the world as it was understood just after the Great War, from Aachen to Zwingli, across twelve volumes and six thousand pages.

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Jupiter

in Roman mythology, the supreme Roman deity, identified with the Greek Zeus. He was the son of Saturn and Rhea. Jupiter was the king and father of men, but his power extended over the deities also; and everything was subservient to his will except the Fates.

JUPITER From him mankind received their blessings and miseries; they looked on him as acquainted with everything past, present, and future. The oak was sacred to him, because he first taught mankind to live on acorns. at Elis, in Olympia, where, every 4th His most famous temple was year, the Olympic games were celebrated in his honor; and his most famous oracle was at Dodona, in Epirus. The Romans considered Jupiter as the especial patron of their city. He is generally represented as sitting on a golden or ivory JUPITER throne, holding in one hand thunderbolts ready to be hurled, and in the other a scepter of cypress, while the eagle stands with expanded wings at his feet. White, the color of the day, was sacred to him For Jupiter Ammon, see AMMON.

In astronomy, the largest planet of the solar system. Its diameter at the equator is nearly 90,000 miles, and the distance from pole to pole is over 84,000 miles. Its bulk is 1,300 times that of the earth, but its density is only one-fourth that of the earth. The average dis- 483,000,000 miles; tance of Jupiter from the sun is traveling 50 iles; 483,000,000 miles; and a railway train ng 50 miles require nine centuries to go from the sun an hour, would to Jupiter. The latter body revolves on its axis in about 9 hours and 55 minutes, Though traveling in its orbit round the which is the length of its day and night. received their blesshey looked on him as ythi past, present, sacred to him, ght ind to live famous temple was where, every 4th mes were celebrated most famous oracle pirus. The Romans the especial patron is generally reprea golden or ivory 3 hand thunderbolts and in the other a hile the eagle stands at his feet. White, was sacred to him.

Bee AMMON.

Largest planet of the ameter at the equamiles, and the dispole is over 84,000 300 times that of the is only one-fourth The average disfrom the sun is il a talike train an hour, would to go from the sun er body revolves on urs and 55 minutes, f its day and night. its orbit round the JURA JURY sun at the rate of 28,743 miles an hour, equity has of deciding cases brought it takes nearly 12 years to complete its revolution; this, therefore, is the length of its year. It is surrounded by four conspicuous belts of a brownish-gray color, two N., two S. of the equator, with feebler ones toward the poles. The equatorial region of the planet is brighter than the rest. Jupiter has nine satellites, four of which were discovered Jan. 6, 1610, by Galileo, and another Sept. 9, 1892, by Prof. Edward E. Barnard, then of the Lick Observatory. The four discovered by Galileo are usually known by their numbers, which proceed in order of distance from the planet. If named they are called Io, Europa, Ganymede and Callisto. The 9th satellite was discovered by Nicholson in 1914.

JURA (zhü-rä'), a department in the E. of France, bordering on Switzerland ; area 1,951 square miles; pop., about 250,000. A large part is covered by the part is covered the JURA (g. v.) Mountains, and it is drained by the Ain and the Oignon. The pastures are both extensive and rich, and the cattle reared on them, together with their dairy produce (including Gruyère cheese), form the chief source of wealth.

Iron is worked, marble and alabaster abound, and there are salt springs in different quarters, from which salt is made .

Capital, Lons-le-Saulnier .

JURA (jörä), a range of mountains of a peculiar limestone formation, oölitic in composition, and generally called Jurassic, which extends from the angle formed by the Rhone and the Ain, in a N. E. direction (with a gradually declining elevation) for more than 450 miles, to the upper course of the Main.

But it is usual to restrict the name to the ranges that lie along the frontier of Switzerland and France-mainly in the departments of Doubs, Jura, and Ain.

The ranges are broken by numerous transverse gorges or “cluses." Limestone caves are numerous, and they abound in magnificent stalactites and in the bones of extinct animals. Some rivers of considerable size sink into the ground and reappear after some distance, as the Orbe, the Doubs, and the Creuse.

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