1288 - °FONTAINE [DES BERTINS], Alexis. Memoirs Presented to the Royal Academy of Sciences, Unpublished at the Time, Paris (Imprimerie Nationale) 1764. In-4°, half shagreen (scuffed) with later cloth covers, ribbed spine with originally gilt title and stamp of the Athenæum Library (a prestigious club in London), marbled endpapers, pp. [viii] + 588, marbled edges, text with wide margins but very slightly browned.

°FONTAINE [DES BERTINS], Alexis. Memoirs Presented to the Royal Academy of Sciences, Unpublished at the Time, Paris (Imprimerie Nationale) 1764. In-4°, half shagreen (scuffed) with later cloth covers, ribbed spine with originally gilt title and stamp of the Athenæum Library (a prestigious club in London), marbled endpapers, pp. [viii] + 588, marbled edges, text with wide margins but very slightly browned. An unsociable researcher who preferred to work in isolation, Fontaine was nevertheless “often original and presents, amid confused developments, a number of ideas that proved fertile, especially in the fields of the calculus of variations, differential equations, and the theory of equations” (DSB, v 54).