Lockyer
JOSEPH NORMAN, an English astronomer; born in Rugby, England, May 17, 1836. In 1869 he was elected an F. R. S., and in 1870 was appointed secretary to the Royal Commission on Scientific Instruction, made Lecturer on Astronomy at the Normal School of Science at South Kensington, and sent out to Sicily as head of the eclipse expedition. In the following year he headed a similar expedition to India and was elected Rede lecturer at Cambridge. He had already in 1866 discovered a new method of observing the sun; and in 1874 he gained the Rumford medal of the Royal Society and was appointed editor of "Nature." He was an able popular lecturer on astronomical physics, and wrote " Elementary Lessons in Astronomy" (1868); "Studies in Spectrum Analysis" (1878); "Contributions to Solar Physics" (1873); "The Spectroscope and its Applications" (1873); a primer on "Astronomy Astronomy" (1874); "Star- Gazing" (1878); " The Chemistry of the Sun" (1887); "The Meteoritic Hypothesis" (1890); "Dawn of Astronomy" (1894); etc. He died in 1920. LOCOMOTIVE. See RAILWAYS. LOCRI. See GERACE.
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Locomotive Clock
A clock adapted to be carried in the cab of a locomotive, and so constructed as to withstand the jarring and heat variations of the temperature. They are usually made with detached lever escapement, jeweled, like a watch, and compensated for temperature.
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Locoweed
lo'ko-wed, a silvery white, silky-leaved plant of the pea family, native to the great plains region from Texas northward. Botanists call it the woolly astragalus. Live stock, including cattle, sheep, and especially horses, acquire a taste for the locoweed and are unwilling to eat anything else. They lose their eyesight and go into a kind of dementia or craziness, during which they cut up all sorts of antics. Emaciation follows, and the animals perish as if from hunger. The state of Colorado has expended a quarter of a million dollars in attempts to eradicate the plant. There are several species. The specific cause of cattle dementia appears to be the presence of minute quantities of the chemical element known as borium. This element appears to accumulate in the system of the grazing animal until the mischief is done.
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Locus
a Latin word meaning a place or spot. In geometry , the locus of a point is the line generated by the point when moving according to some determinate law. The locus of a line is the surface generated by a line moving according to some fixed law. Thus, if a point moves in the same plane in such a manner that the sum of its distances sigilli (usually abbreviated from two fixed points of the plane is constant, the locus of the point is an ellipse. Locus delicti : The place where an offense is committed. Locus pœnitentiæ: Time or opportunity for repentance before a probative writing is executed. Locus L. S.): The place where the seal, usually appended to a person's signature, is to be affixed to a deed or public document. Locus standi : The right of any person or persons to appear and be heard on any matter before a particular tribunal.
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Locust
a well known tree belonging to the legume or pea family. It grows to the height of eighty feet. It has thorny branches, delicate pinnate leaves, and dense, drooping clusters of white, heavily scented flowers, shaped like those of the pea. The flowers are succeeded by many-seeded pods. Young plants grow from seeds, as well as from underground suckers, soon forming dense thickets. The wood is heavy, hard, and very durable. It makes excellent fence posts and policemen's clubs. The common locust is known to the botanist as robinia. It is called also the black or yellow locust, and the false acacia. It grows throughout eastern North America . A related shrub from the Alleghanies bears pink flowers. It is cultivated for ornamental purposes. The clammy locust is a small tree with sticky branchlets and leaf-stalks. It grows in the same region. See Honey Locust
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Locust
SEVENTEEN YEAR, an American Cicada.
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Locust
any migatory species of the orthopterous family Acridiidæ, specially Edipoda migratoria, the migratory locust. An allied species, E. cinerascens, is found in the S. E. of Europe. The females excavate holes in the earth and deposit their eggs in a long mass enveloped in a glutinous secretion. The larvæ commence their destructive career almost as soon as they are hatched. The migrations of locusts are probably in search of food. Their range in the Old World stretches from Spain and the S. of France , through Russia to China; S. of this boundary line they are equally destructive. The Rocky Mountain locust is Caloptenus spretus. There seems to be no special periodicity in the appearance of swarms of locusts. Locusts are by preference vegetable-feeders; but they will attack dry animal substances, and even become cannibals when other food fails . Next to man, their chief enemies are insectivorous birds, parasitic beetles of the family Cantharidæ, and dipterous flies of the family Bombyliidæ.
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Lodestar
or LOADSTAR ("leading star") a name given to the polar star.
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Lodestone
A precious stone believed to possess magical properties of diverse kinds. If one is ill, one must hold it in one's hands and shake it well. It cures wounds, snakebites, weak eyes, headaches and restores hearing. The possessor of the lodestone may walk through reptiles in safety, even when they are accompanied by " black death ." Orpheus says that "with this stone you can hear the voices of the gods and learn many wonderful things; " that it has the property of unfolding the future; and if held close to the eyes it will inspire with a divine spirit. دو
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Lodge (II)
SIR OLIVER JOSEPH, an English scientist and student of psychical phenomena, born at Penkhull, Staffordshire, England, in 1851. He was educated in science at the University College of London , and on the founding of the University College of Liverpool, he became professor of physics. He remained in the post until 1900, when he was appointed principal of the University of Birmingham. In 1915 he was appointed Romance lecturer at Oxford. He made important studies in physics of electricity and ether and became one of the most eminent authorities in that line tist, romance-writer, and poet; born in
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