The elements of navigation : containing the theory and practice, with all the necessary tables, to which is added, a treatise of marine fortification ... (1754)
Robertson, J. (John), 1712-1776, Adams, Charles Francis, 1807-1886, former owner. BRL, Adams, John, 1735-1826, former owner. BRL, Boston Public Library) John Adams Library BRL · London : Printed for J. Nourse ... · leaf 101
ded in any continueddecreafing geometric progreflion, as of 10 to 8;then the feries of terms will be 10; 8; 6,4 ; 5,12;4,096; 3,2768; 2,62144 &c. Alfo let the cir-cumference be divided into any number of equalparts, in the points d, e,f, g, &c. Then if the fe-veral divifions of the radius… … 289. From the nature of a decreafing geometric progrefllon, itiseafyrto conceive that the radius ca may be continually divided; and altho ■ each fucccflive divifion becomes fhorter than the next preceding one, yetthere muff be an indefinite number of divifions, or terms, before the laftof them…
Navigation · Nautical astronomy · Fortification
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