Mathematics Küentzi, Mauritz Arithmetica fundamentalis. This is the noblest basic rules of the art of arithmetic, from which one can learn this art by himself without any other instruction. It contains, I. How to pronounce and write all cypher-numbers. II. The four species or genera of the basic rules of the art of arithmetic. Bern, self-published, 1710. 16.6 x 9.3 cm. 8 pp., 157 p., 1 leaf. (Errata), 1 w. HPgt. d. (slightly bumped and somewhat rubbed). First edition. - Not in VD18 - Not bibliographically traceable for us. - Rare Bernese arithmetic textbook, a second edition was published in 1776. According to the title, Küentzi was a schoolmaster in Adelboden and a "mathematical art lover". He dedicated his work to the Schultheissen and Seckel masters as well as the Great and Small Councils of the city and countryside of Bern. - Only 3 other copies can be found in public libraries worldwide via KVK (ETH-Bibliothek, but here without errata and white sheet, UB Bern, ZB Solothurn). Last traded at international auctions about 20 years ago. No other copy currently traceable in the trade. - Slightly browned, some faint foxing in the margins, slightly dampstained at the back, title page with professionally restored tear, errata minimally torn in the margin (approx. 0.3 mm). Overall in good condition. - Some old handwritten ownership notes on the front endpaper, partly erased. Mathematics - First edition. - Not in VD18 - Not bibliographically traceable for us. - Only 3 other copies can be found in public libraries worldwide via KVK. - Last traded at international auctions about 20 years ago. Currently no other copy traceable for us in the trade. - Contemp. half vellum (slightly bumped and chafed). - Rare Bernese arithmetic textbook, a second edition was published in 1776. According to the title, Küentzi was a schoolmaster in Adelboden and a "mathematical art lover". He dedicated his work to the Schultheissen and Seckel masters as well as the Grand and Small Councils of the city and countryside of Bern. - Slightly browned, some foxing in the margins, slightly dampstained at the back, title page with professionally restored tear, errata minimally torn in the margin (approx. 0.3 mm). Overall in good condition. - Some old handwritten ownership notes on the front endpaper, partly erased. This lot is taxed. A premium of 24.95% will be added to the hammer price and 7% (books, art) or 19% VAT (manuscripts, silkscreens, offset prints, photographs) to the final invoice amount in the European Union. This work is subject to the regular margin scheme. There is a 24.95% buyer's premium on the hammer price and 7% (Books and Art) or 19% VAT (Manuscripts, Screenprints, Offsetprints and Photographs) on the final invoice amount in the European Union.