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Zinc13.05 Nickel6.09 Iron.28 Tin.09 The latter two are, perhaps, merely accidental ingredients. See alloy. Or′phe-on. (Music.). A musical instrument of the melodeon order. Or′re-ry. A planetary machine to illustrate and explain the motions of the heavenly bodies. Its invention appears to have been coeval with the construction of the clepsydra and other horological automata. It was so called from the Earl of Orrery, who bore the expense of one constructed in 1715 by Rowley, after a pattern devised by the clockmaker George Graham. See planetarium; Tellurian. The heliocentric theory was held by the ancient Egyptians, and taught by them to Pythagoras. The theory did not flourish in Greece. Plato mentions it. A few scholars, like Nicolas (probably of Laodicea, fourth century A. D.), entertained it during the vast intervening period, and it was eventually revived by Copernicus. When the Spaniards conquered Peru, they found the natives in possession of t<
that of the moon round the earth, performed in the exact times actually occupied in those motions. The orbits of the planets are said to have their true proportions, eccentricities, positions, and obliquities to the elliptic; and by this machine, — as a distinguished author observes, — as by a perpetual ephemeris, the situations, conjunctions, and oppositions of the planets for any time may be accurately determined. We read of a planetarium by Watson, in 1689, and another constructed by Rowley, 1700, from the plans of Graham. This was the one referred to above as having come into the possession of the Earl of Orrery, and is similar to the upper one in the accompanying figure. Sir John Herschel says: As to getting correct notions on the magnitudes and distances of the planets by drawing circles on paper, or, still worse, from those very childish toys called orreries, it is out of the question. With great deference to the distinguished astronomer, we must insist upon the use
gkinsAug. 20, 1861. 34,932WilliamsApr. 8, 1862. 38,450PalmerMay 5, 1863. 45,236FolsomNov. 29, 1864. 46,064BartlettJan. 31, 1865. (Reissue.)2,210BartlettMar. 27, 1866. 54,816GoodspeedMay 15, 1866. 56,990PiperAug. 7, 1866. 60,669BartramJan. 1, 1867. 61,176DriggsJan. 15, 1867. (Reissue.)2,745HodgkinsAug. 20, 1867. (Reissue.)2,746HodgkinsAug. 20, 1867. 68,196HillsAug. 27, 1867. 69,666HodgkinsOct. 8, 1867. 76,385BartlettApr. 7, 1868. 80,889WillmarthAug. 11, 1868. 81,821RowleySept. 1, 1868. 83,492HancockOct. 27, 1868. 83,750Willmarth et al.Nov. 3, 1868. 84,959MyersDec. 15, 1868. 86,057CanfieldJan. 19, 1869. 86,695RussellFeb. 9, 1869. 93,354FootMay 25, 1869. 96,160SmithOct. 26, 1869. 99,481RudolphFeb. 1, 1870. 99,704PorterFeb. 8, 1870. 103,050KeableMay 17, 1870. 109,705YoungNov. 29, 1870. 117,101NeckerJuly 18, 1871. 124,808GoodesMar. 19, 1872. 125,301JohnsonApr. 2, 1872. 126,921BeckwithMay 21, 1872. 133,351BeckwithNov. 26, 1872. 137,618O'NeilApr. 8