Rasse
a closely allied to the civet, spread over a great extent of Asia, including Java, various parts of India, Singapore, Nepal, and other localities. Its perfume, which is secreted in a double pouch like that of the civet, is much valued by the Javanese.
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Rasselas
ras'e-las, a philosophical romance by Dr. Samuel Johnson. It was published in 1759, and is the most popular of Johnson's writings. Rasselas is a prince who lives in the "Happy Valley," where he awaits his succession to the crown of an imaginary land. The story teaches the folly of sacrificing present happiness for the uncertain promises of the future. See Johnson ; Samuel
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Rastatt
or RASTADT, a town and first-class fortress in Baden; on the with the 3 miles from its junction junction Murg, Murg, Rhine, and 15 miles S. W. of Carlsruhe. Steel wares, beer, and tobacco are manufactured. From 1725 to 1771 the town was the residence of the Margraves of Baden-Baden. The present fortifications were erected in 1840-1848 by Austrian engineers to protect the N. entrance to the Black Forest. Rastatt is memorable for two congresses-the first in 1714, when a treaty of peace, which brought the war of the Spanish Succession to a close, was signed between Marshal Villars and Prince Eugene; and the second in 1797-1799. On the breaking up of this latter congress without any definite result the three French plenipotentiaries set out for Strassburg; but they had scarcely got beyond the gates t they were attacked by of Rastatt when Austrian hussars, and two of the three slain, while the third was left for dead in a ditch. Their papers were carried off, but no further spoil was taken. It seems that the Archduke Charles gave orders to the hussars to drive the French representatives out of Rastatt and take away their papers; the killing was the work of the officers, misunderstanding their orders. The town played a prominent part in 1849 as the stronghold of the revolutionists in Baden. Pop. about 16,000.
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Rastrites
in palæontology, a genus of Graptolites or Rhabdophora. The polypary consists of a slender axial tube, having on one side a row of cellules, or hydrothecæ, separate and not overlapping. The typical species is R. peregrinus, which, with R. triangulatus, is found in the S. of Scotland. Etheridge makes a zone of R. peregrinus in the Upper Birkhill or Gray Shale group of the Lower Llandovery. Found also in Bohemia (where it is said to extend to the Upper Silurian), in Saxony, etc.
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Rat Snake
Ptyas mucosus, a powerful snake, attaining a length of seven feet and upward. Common in India and Ceylon, scarce in the Archipelago. It frequently enters houses in search of mice, rats, and young fowls. It is fierce, and always ready to bite.
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Rat-Bite Fever
an infection arising probably from a spirochete, present in the blood of about 3 per cent. of house rats , and consequently called spirochæta morsusmuris by Japanese specialists. The spirochetal theory is supported by the efficacy in the fever of salvarsan, which is known to have a remedial effect in spirochete cases.
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Ratchet
in machinery, the detent a racket wheel. which prevents the backward motion of inclined teeth for receiving a ratchet or RATCHET WHEEL, a wheel having detent, by which motion is imparted or arrested. The teeth are of such shape direction only. The detent may be a as to revolve and pass the detent in one pallet or a pawl. The former receives ing circular movement of the arbor and an intermittent rotation by a reciprocatits cam. Sometimes the wheel is intermittingly rotated by the motion of one tent in the intervals between the forwhile the other one acts as a deward motions of the former. ated by a ratchet and pawl, so that it
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Ratchet
A small lever working freely upon an arbor which engages the teeth of the ratchet-wheel and prevents it from turning backward.
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Ratchet Spring
The spring which actuates the ratchet.
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Ratchet Wheel
A wheel having sharp angular teeth into which the ratchet engages to prevent the arbor upon which it is mounted from turning backward.
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Ratchet Wrench
a wrench opermay be turned continuously without removal from the bolt or nut to which it is applied, by a backward and forward movement of the handle.
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Ratchment
in architecture, a kind of flying buttress which principals of a herse, and meets against ich springs from the the central or chief principal. species are usually distinguished, M.
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Ratel
the genus Mellivora. Two indica, the Indian, and M. ratel, the Cape ratel. The body is stout and heavily. built, legs short and strong, with long curved fossorial claws, tail short, earconches rudimentary. General coloration iron-gray on the upper, and black on the lower surface, reversing the general plan of coloration, which is generally lighter on the under surface. A marked white stripe divides the gray of the upper parts from the black in the Cape ratel, which is said to live principally on honey. Jerdon says that M. indica, which he calls the Indian badger, is found throughout India, living usually in pairs and eating rats, birds, frogs, white ants, and various insects; and in the N. of India, where it is accused of digging out dead bodies, it is popularly known as the grave-digger. It doubt less also, like its Cape congener, occasionally partakes of honey and is often very destructive to poultry. In confinement it is quiet, and will eat fruits, rice, etc.
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Rathenow
a town of Prussia, on the right bank of the Havel (here crossed by a stone bridge), 43 miles W. by N. of Berlin. Optical instruments, wooden wares, machinery, bricks and tiles, are made. Pop. about 25,000.
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Rathlin
a c crescent-shaped island off the coast of Antrim, 6½ miles N. of Ballycastle. Area, 3,398 acres. St. Colomba established a church here in the 6th century; and Bruce in 1306 took refuge in a castle, now a ruin.
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Ratibor
a town of Prussian Silesia; on the left bank of the Oder, 44 miles S. S. E. of Oppeln It is the chief town of the principality of Ratibor, which, a sovereign duchy from 1288 to 1532, has since 1742 been subject to Prussia. The town manufactures tobacco, shoes, paper, glass, sugar, furniture, etc., and has large ironworks. Pop. about 40,000.
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