Montreal: Imprimée pour le compte de l'auteur, 1836. First edition. Small 8vo, original sheep spine, blue boards, viii, 128 pages. Binding somewhat rubbed and stained and a bit soiled, with a bit of paper missing from the rear board; a very good copy. Item #15507
An uncommon early French Canadian arithmetic book, from an author about whom little (aside from claim on the title page to be former French trader) is known. Though a few earlier works of this sort had appeared in French Canada, one scholarly survey notes that though "Ladreyt covers much the same ground as Bibaud and Bouthillier, he distinguishes himself by his pedagogical care. His page layout is more adapted to the logical hierarchy of the ideas, and reasoning is important because of its importance in training the faculty of judgement. For this reason he does not cite the rule of three as such, preferring that the reader reason out a problem rather than blindly applying a rule. Despite these qualities or perhaps because of them, Ladreyt's book had a rather limited success." Archibald & Charbonneau, "Mathematics in Canada Before 1945: A Preliminary Survey," Mathematics and the Historian's Craft: The Kenneth O. May Lectures (2005). Karpinski, page 390. Bold ink signature of an early scholar to the front free endpaper and to the spine.