Maps and map-making; three lectures delivered under the auspices of the Royal geographical society (1910)
Reeves, Edward Ayearst, 1862-1945, Royal Geographical Society (Great Britain) · London, The Royal geographical society · leaf 38
£1. … Fig. 20.—Hadleys Octant. ment which has certainly the right to be called the firstreflecting instrument on the principle of the sextant.But for some unexplained reason, the letter was nevermade public during Halleys lifetime, and it was onlyafter his death that it was found amoug his papers, and in…
Cartography · Surveying
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