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Encyclopedia Britannica - Main :: DAH-DEM |
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DELANY, MARY GRANVILLE (1700-1788) , an English-woman of literary tastes, was born at Coulston, Wilts, on the 14th of May 1700. She was a niece of the 1st Lord Lansdowne. In 1717 or 1718 she was unhappily married to Alexander Pendarves, a rich old Cornish landowner, who died in 1724. During a visit to Ireland she met Dean Swift and his intimate friend, the Irish divine, Patrick Delany, whose second wife she became in 1743. After his death in 1768 she passed all her summers with her bosom friend the dowager duchess of Portland
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paper mosaiks " now in the British Museum; she had known every one worth knowing in her day,had corresponded with Swift and Young, and left an interesting picture of the polite but commonplace English society of the 18th century in her six volumes of Autobiography and Letters. Burke calls her " a real fine lady "" the model of an accomplished woman of former times." She died on the 15th of April 1788.DE LA REY, JACOBUS HERCULES (1847 ), Boer soldier, was born in the Lichtenburg district
DE LA RIVE, AUGUSTE ARTHUR (1801-1873), Swiss physicist, was born at Geneva on the 9th of October 1801. He was the son of Charles Gaspard de la Rive (17701834), who studied medicine at Edinburgh, and after practising for a few years in London, became professor of pharmaceutical chemistry at the academy of Geneva in 1802 and rector in 1823. After a brilliant career as a student, he was appointed at the age of twenty-two to the chair of natural philosophy in the academy of Geneva. For some years after his appointment he devoted himself specially, with Francois Marcet (18031883), to the investigation of the specific heat of gases, and to observations for determining the temperature of the earth's crust. Electrical studies, however, engaged most of his attention, especially in connexion with the theory of the voltaic cell and the electric discharge in rarefied gases. His researches on the last-mentioned subject led him to form a new theory of the aurora borealis. In 1840 he described a process for the electro-gilding of silver and brass, for which in the following year he received a prize of 3000 francs from the French Academy of Sciences. Between 1854 and 1858 he published a Traite de l'electricite theorique et appliquee, which was translated into several languages. De la Rive's birth
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His son, LucIEN DE LA RIVE, born at Geneva on the 31d of April 1834, published papers on various mathematical and physical subjects, and with Edouard Sarasin carried out investigations on the propagation of electric waves. End of Article: DELANY, MARY GRANVILLE (1700-1788) If you wish, you can link directly to this article.
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