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Updated: June 10, 2025
At the end of the eighteenth century, Delambre, in his work Sur la Base du Système métrique décimal, clearly gives us to understand that magnitudes of the order of the hundredth of a millimetre appear to him incapable of observation, even in scientific researches of the highest precision.
Cassini, in 1678, made it 25·58; Delambre, in 1775, no more than twenty-five days. Later inquiries brought these divergences within no more tolerable limits. Laugier's result of 25·34 days obtained in 1841 enjoyed the highest credit, yet it differed widely in one direction from that of Böhm , giving 25·52 days, and in the other from that of Kysæus , giving 25·09 days.
The turning-point of his fortune came when the attention of Lalande was called to the young man by his remarkable memory, and Lalande soon showed his admiration by giving Delambre certain difficult astronomical problems to solve. By performing these tasks successfully his future as an astronomer became assured.
A valuable translation of most of the volumes has been published in Paris, enriched by the oriental literature of M. Langles; the astronomical and physical knowledge of M. Delambre; and the natural history knowledge of Cuvier, Lamark, and Olivier. De la Roque, Voyage de Syrie et du Mont Liban. 2 vols. 12mo. Paris, 1722. Voyage de l'Arabie heureuse par l'Océan Oriental. 12mo. Paris, 1716.
"The next in rank?" asked Ardan, astounded at his friend's wonderful memory. "The next in rank," replied Barbican promptly, "are those about the size of the Matterhorn, that is to say about 2-3/4 miles in height. They are Macrobius, Delambre, and Conon.
But Bonaparte, little disposed to occupy himself with such an affair, charged Delambre to examine it and address a report to him.
DELAMBRE. A conspicuous ring-plain, 32 miles in diameter, a little S. of the equator, in W. long. 17 deg. 30 min., with a massive polygonal border, terraced within, rising on the W. to the great height of 15,000 feet above the interior, but to little more than half this on the opposite side. Its outline approximates to that of a pentagon with slightly curved sides.
ALFRAGANUS. A large bright crater, about 9 miles in diameter, with very steep walls, some distance S.S.W. of Delambre, and standing on the W. edge of a large but very shallow and irregular depression W. of Taylor. There is a remarkable chain of craters on the W. of it.
Miss Ingate remembered, however, what she had said in the café-restaurant. Then they turned into the Rue Delambre, and Tommy halted them in the deep obscurity in front of another of those huge black doors which throughout Paris seemed to guard the secrets of individual life. An automobile was waiting close by.
DELAMBRE read an account of the life and works of Cousin. DEGERANDO, an account of the education which the young savage of Aveyron receives from Itard, physician to the Institution of the Deaf and Dumb. PRONY, the result of observations made with a French instrument and an English one, for the purpose of determining the relation between the French metre and the English foot.
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