Olmsted, Denison, 1791-1859. [from old catalog] · New York, R. B. Collins · leaf 19
ct of the rotundity of the earth upon the ap-pearance of a ship, when either leaving or approachingthe spectator, is illustrated by Fig. 1. As light proceeds in straight lines, it is evident that,if the earth is round, the top of the ship ought to comeinto view before the lower parts, when the ship… … a continued plane, then the spectator would see all partsof the ship at the same time, as is represented in the an- nexed figure. Fig. 2.
Astronomy
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![An illustration from A treatise describing and explaining the construction and use of new celestial and terrestial globes; designed to illustrate ... the phoenomena [sic] of the earth and heavens, and to shew the correspondence of the two spheres. With a great variety of astronomical and geographical problems occasionally interspersed (1766)](https://img.insideoutlibrary.com/img/200/ia-treatisedescribi00adam-5-3.webp)
