agency we owe Moody is the summer-school for Bible study at Northfield, where Christian workers study under the foremost preachers and professors. Connected with this school is the institute for the training of young men for this work, which was founded from the proceeds of the sale of Moody and Sankey's Gospel Hymns, the most popular hymn-book ever published. Many of Moody's sermons have been published. See Moody and the Memoir by W. R. Moody, his son (b. 1869), who continues the father's work in Northfield. He died on Dec. 22, 1899.

Moody, William Henry, was born in New bury, Mass., educated at Phillips Academy, Andover, and graduated from Harvard in 1876. Óle took up the law, and became district-attorney of the east district of Massachusetts in 1890, serving till 1895. He successfully prosecuted the "boodle" aldermen of Lawrence. He was elected to the 54th Congress, and served also in the 55th, 56th and 5 7th Congresses. During that time he gained the reputation of being a thorough master of the method of conducting the proceedings of the house; and he also was of much service in the important committee of appropriations. On May 1, 1902, he was selected by President Roosevelt to succeed Mr. Long as Secretary of the Navy. On July 1, 1904, he was appointed Attorney-Ge«ieral of the United States. In 1906 he was appointed Supreme-Court Justice. He has had charge of many of the important prosecutions which the government has conducted against offending corporations and their officers.

Moon, a satellite of the earth and our nearest neighbor in the stellar universe. Its

Description images/pp0142 1


distance from the earth varies from 221,614 to 252,972 miles. Its apparent mean di-

ameter is 31' 7" so that its real diameter is 2,163 miles, and its volume only -fa that of the earth. The moon's mass, however, is only about ^ of the earth's, which makes the acceleration of gravity at its surface only J that at the surface of the earth. Professor Young illustrates this by saying that "a man on the moon could jump six times as high as he could on the earth and could throw a stone six times as far." The absence of any atmosphere or water on the surface of the moon has been proved by the moon's appearance in the telescope, by the spectroscope and by the absence of refraction in the occultation of stars. The moon, like the sun, moves constantly toward the east among the stars; but it gains 120 11.4' daily on the sun. Accord-


ingly the moon requires---------- days to gain

120 11.4'

one complete revolution on the sun. This length of time, which is 29* I2h 44111 2.7s is called one month. This is also exactly the time required for one rotation of the moon upon her own axis. The consequence is that she always keeps the same side toward the earth. The other side of the moon is something that no inhabitant of the earth has ever seen. The reason why the period of the moon's rotation is exactly one month is a matter which is thoroughly understood — namely, tidal friction — but is too advanced for discussion in this place. The various phases which the moon presents will be clear from the accompanying figure which represents the earth and the moon's orbit, illuminated by a sun at a great distance above the top of the page. When the moon lies exactly m the direction of the sun we say it is "new." In this position we see none of its illuminated hemisphere; but as the moon moves away from the sun's direction we see more and more of the illuminated portion. At the end of one week, half of the bright surface is seen by an observer on the earth, and we speak of this as a "half moon." A week later we see the complete, illuminated hemisphere and call it "full moon." The moon now begins to wane and passes through these same phases, in reverse order, until the next "new moon." The moon has in all ages been and still is the subject of many superstitions. Witness such words as moon-struck and lunacy.

Moon'stone. See Feldspar. .

Moore, Sir John, a British general, was born at Glasgow, Scotland, Nov. 13, 1761, and died at Corunna, Spain, Jan. 16, 1809. He obtained the Order of the Bath for his services in Egypt in 1801. In 1802 he was with the army m Sicily and in Sweden, and in 1808 he was put in command of the English army_ in the Spanish peninsula. The Spaniards failed to support him, and, when the news reached him that Napoleon with