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EULER, LEONHARD. 4 Works by Euler. 1. Conjecture sur la Raison de quelques Dissonances généralement recues dans la Musique. - 2. Du Veritable Caractere de la Musique Moderne. - 3. Des Lunettes a trois verres qui représentent les Objets Debout. - 4. Sur les Diverses Manieres de faire Avancer Les Vaisseaux, sans employer la Force du Vent. (Berlin, Haude et Spener, 1766). 4to. No wrappers, as issued in "Memoires de l'Academie Royale des Sciences et belles Lettres", tome XX, pp. 165-294 (pp. 165-173;pp.174-199;pp. 200-239;pp. 240-294) and 4 folded engraved plates. Clean and fine. ¶ 4 first editions by Euler. In the first two he treats musical theory by mathematical means. The third deals with optical problems by way of mathematics. In the last he applies the mathematical apparatus of hydrodynamics, a science he created earlier in 1753 and 1755, to special problems of vessels moving in water. DKK 3.500 NOK~ 3.710 SEK~ 4 375 EUR~ 470 USD~ 728 GBP~ 310 JPY~ 76.065 · LYN31288 · Lynge & Søn A/S, København K (DK) ·

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