‎"PICARD, (JEAN) & J.H. LAMBERT. - WATER-LEVELLING.‎
‎Abhandlung vom Wasserwägen mit neuen Beyträgen von J.H. Lambert. Mit Kupfern.‎

‎Berlin, Haude und Spener, 1770. 8vo. Cont. hcalf. Gilt back and gilt titlelabel. A paperlabel pated on upper compartment of back. Stamps on titlepage. XVI,296 pp. and 10 folded engraved plates (8+2). Lambert's 8 appendixes pp. 187-296 with 2 plates. Some light browning, but a good copy.‎

Reference : 31521

‎This is the second German edition (the first from 1749 was abridged) by the famous French astronomer and geographer Jean Picard, who was the first to measure the lenght of a degree of a meridian. It is the first appearance of Lambert's 8 tracts where he treats the measuring with the water-levelling instruments mathematically, and applies some of the principles he introduced in his epochal work on theoretical carthography in 1772. The book has de la Hire's ""Vorrede"". - Not in Rosenthal, Litteratur der Technologie (only 1749 ed.). - Poggendorff II:442 (as part of Picard's ""Nivellement"").‎