The Mathematical Principles of Geography containing, I. An Account of the various Properties and Affections of the Earth and Sea; with a Description of the several Parts thereof. And a Table of the Latitude and Longitude of Places. II.The Use of the Artificial and Terrestrial Globe, in solving Problems. III. The Principles of Spherical and Spheroidical Sailing; with the Solution of the several Cases in Numbers, by the common Tables, according to the Spheroidical Figure of the Earth/Dialling or the Art of drawing Dials, on All Sorts of Planeswhatever. In Three Parts. Sect. I. The fundamental Principles ofDialling. Sect. II. The Practice of Dialling, illustrated on allkinds of Planes. Sect. III. Of describing the common Furniture of Dials; an

In-8°, 2 volumi in uno: (2), viii, (ii), 172, IV carte di tavola ripiegate; iv, 164, XVIII carte di tavola ripiegate, legatura in piena pelle coeva, con tassello in marocchino e titolo in oro al dorso, nervature. I volumi sono arricchiti da numerose tabelle. Prima edizione, buona copia.William Emerson rappresenta nel panorama scientifico del XVIII secolo una sorta di scienziato versatile e acutissimo, esperto in matematica, orologiaio, accordatore di clavicembalo e costruttore di meridiane.In-8 °, 2 volumes in one: (2), viii, (ii), 172, IV folding plates; (iv), 164, XVIII folding plates, contemporary calf binding, with morocco label and gilt title on the spine, bands. The volumes are enriched by numerous charts. Fair copy. First edition.William Emerson represents in the scientific panorama of the eighteenth century a sort of versatile and very acute scientist, expert in mathematics, clockmaker, harpsichord tuner and sundial maker.