FIRST EDITION, 4to, pp. [xii], 123, . Contemporary vellum, boards bordered in gilt with a central gilt tool. Lightly toned and soiled. Rebacked to style, hinges neatly relined, boards soiled and marked, ties lost. Ownership inscription of Henry Williamson to flyleaf (crossed out), price of 10s 6d to endpapers, and further ownership inscription of Gasparis Delahoyde, surgeon, dated 1747.
One of Vossius's 'more scientific tracts... [which] attracted considerable attention among his contemporaries' (ODNB): he sought to explain the motion of the tides, a question of increasing interest, with reference to the heat of the sun exclusively, instead of the stars, the moon, or other forces. At the end he also discusses the use of a mercury barometer for predicting storms at sea. The following decade the text was translated into English to help it reach a wider audience.