Item Details

Des Herrn de La Chapelle... Abhandlung von dem Regelschnitten von den andern krummen Linien der Alten und der Cycloide, nebst ihren Anwendungen auf verschiedene Künste. Uebersetzt.

Carlsrule, [Germany]: Micheal Macklot, 1771. [First German Edition]. Quarter calf. Translation to English: M. De La Chapelle's Treatise on the Conic Sections of the Other Curved Lines of the Ancients and the Cycloids. Jean-Baptiste de La Chapelle (c.1710–1792, Paris) was a French priest, mathematician and inventor. He contributed 270 articles to the Encyclopedia in the subjects of arithmetic and geometry. In June 1747 he was elected a Fellow of the Royal Society of London. He was the inventor of a primitive diving suit in 1775, which he called a "scaphandre" from the Greek words skaphe (boat) and andros (man) in his book Treatise on the theoretical and practical construction of the scaphandre or boat of the man (Treatise on the theoretical and practical construction of the "Scaphandre" or human boat). The invention of the Abbé de la Chapelle consisted of a suit made of cork which allowed soldiers to float and swim in water. As the name and description suggest, it was more of a flotation suit than a diving suit. Johann Lorenz Boeckmann was also a German mathematician. Boeckman once wrote to Benjamin Franklin on her patronage of the sciences. Very Good+. Moderate head and tail wear, rubbing to extremities, chipping, significant peeling on board verso, starting/detached upper hinge, five raised bands, minor foxing, marbled endpapers, otherwise tight, bright, and unmarred. Ex library stamp. Quarter calf over speckled boards, 8vo, 4 leaves, 520 (recte 528) pages, 24 pages with 11 copper plates folded several times, in German from French. Item #11143

Price: $550.00