Shlyper, Servatius. Newly-eröfnette complete, well-decorated rake-stube, that is: well-founded, most useful calculation book, with lots of beautiful rules and examples, in the very shortest way, furnished according to the current purchase trade and the latest change-style of such form. 8 Bl., 240 pp. 17 x 10 cm. Leather band of the moment (cover scraped and a bit scratched). Mülheim am Rhein, J. A. Schöttler Erben, 1782. VD18 10695095. – The first edition of this rare calculation book was published in 1734. In any case, Schlyper "breaks the usual structure of a calculation book. A guide to the use of the four basic calculations and tasks with their solutions is sought with him in vain ... The book of Schlyper was a success. ==References====External links== ==References====External links== This was certainly not solely due to the demand for school lessons ... At the beginning you will find over 40 pages of tasks to be solved with the 'Regula de Tri' ... Then follow the Tara, bills of exchange and interest invoices, which are especially useful for merchants ... The success that Schlyper's book of calculations clearly had in the Bergisches is mainly due to the fact that he took his calculations out of practice and arrested them in the mountainous region. In large numbers, there are invoices that could be useful to the merchants in his hometown of Elberfeld, which was a center of yarn and cloth production." (Wesoly: Mathematical instruction and calculation books in the Duchy of Berg. In: Romerike Berge, Jg. 64, issue 3, pp. 16-25, here p. 20). The Remscheid teacher Daniel Schürmann (1752-1838) published a "Beylage zu Schlypers Rechenstube" in 1793 before it was forgotten. Schlyper was ill. Title Sing-, Schreib- und Rechenmeister in Elberfeld. – Mirror and back of the title with entries of a family Welp (Friedrich Wilhelm Welp 1783) until ca. 1813. Finger stained, edges tanned, some worm tracks and donkey ears. 1 bl. with small hole, 1 b. with corner tear (low text loss on one side).