(b 1813; d London, 19 Dec 1907).
English engraver. He was educated in Ghent, Belgium, and later at the Royal Academy Schools, London, where he was awarded silver medals in 1839 and 1841. He worked in the mixed mezzotint style and exhibited 43 examples of his work at the Royal Academy between 1841 and 1893. Of Stacpoole’s many plates, perhaps the best-known are those after William Holman Hunt’s Shadow of Death (1873; Manchester, C.A.G.) and the battle subjects of Lady Butler. Stacpoole began work early in 1874 on the engraving of Shadow of Death . The original picture had been bought by Thos Agnew & Sons and was exhibited so widely that, on publication of the engravings in 1877, the sale of proofs alone realized more than £20,000. By January 1879 Stacpoole had received a total of £3560 from the Fine Art Society for his plates after Lady Butler’s Roll Call (1874; British Royal Col.; declared for publication in 1874), Quatre Bras (1875; Melbourne, N.G. Victoria) and Balaclava (1876; Manchester, C.A.G.; both declared in 1876).
Bland arbeten.
Shadow of Death (1873; Manchester, C.A.G.), Lady Butler’s Roll Call (1874; British Royal Col.; declared for publication in 1874), Quatre Bras (1875; Melbourne, N.G. Victoria) and Balaclava (1876; Manchester, C.A.G.; both declared in 1876).
Bland arbeten.
Encyclopédie ou dictionnaire universel raisonné des connaissances humaines.
Ansedd geograf och kartograf som införde litografikonsten i England.
Stockholm - Mentzer ca 1860.
Kronärtskocka - Basil Besler 1613.
Cassini de Thury, César-François
Biografiska uppgifter:17 June 1714 – 4 September 1784
César-François Cassini de Thury (17 June 1714 – 4 September 1784), also called Cassini III or Cassini de Thury, was a French astronomer and cartographer.
Cassini de Thury was born in Thury-sous-Clermont (Oise), the second son of Jacques Cassini and Suzanne Françoise Charpentier de Charmois. He was a grandson of Giovanni Domenico Cassini, and would become the father of Jean-Dominique Cassini, Comte de Cassini.
In 1735, he became a member of the French Academy of Sciences as a supernumerary adjunct astronomer, in 1741 as an adjunct astronomer, and in 1745 as a full member astronomer.
In January, 1751 he was elected a Fellow of the Royal Society.
He succeeded to his father’s official position in 1756 and continued the hereditary surveying operations. In 1744, he began the construction of a great topographical map of France, one of the landmarks in the history of cartography. Completed by his son Jean-Dominique, Cassini IV and published by the Académie des Sciences from 1744 to 1793, its 180 plates are known as the Cassini map(fr).
The post of director of the Paris observatory was created for his benefit in 1771 when the establishment ceased to be a dependency of the French Academy of Sciences.
His chief works are: La méridienne de l’Observatoire Royal de Paris (1744), a correction of the Paris meridian; Description géométrique de la terre (1775); and Description géométrique de la France (1784), which was completed by his son ('Cassini IV').
César-François Cassini de Thury died of smallpox in Paris on 4 September 1784,
The Cassini projection is a map projection described by César-François Cassini de Thury in 1745. It is the transverse aspect of theequirectangular projection, in that the globe is first rotated so the central meridian becomes the 'equator', and then the normal equirectangular projection is applied.
In practice, the projection has always been applied to models of the earth as an ellipsoid, which greatly complicates the mathematical development but is suitable for surveying. Nevertheless the use of the Cassini projection has largely been superseded by the Transverse Mercator projection, at least with central mapping agencies.
Areas along the central meridian, and at right angles to it, are not distorted. Elsewhere, the distortion is largely in a north-south direction, and varies by the square of the distance from the central meridian. As such, the greater the longitudinal extent of the area, the worse the distortion becomes.
Due to this, the Cassini projection works best on long, narrow areas, and worst on wide areas.
