78 2457 Mathematics Waeijer C de 17th cent and anonymous 17th cent
Anonymous (late 17th cent.). (Mathematical treatise on practical geometry). Manuscript in pen and ink on paper, late 17th cent., (2 blank),(63) lvs., occas. w. calligraphed divisional title-pages and illustrations in pen and ink and grey wash, 19th cent.(?) paper ream wrapper w. large woodcut of the manufacturer and "Pro Patria", "IV" and "Super Fyn Fyn", w. paper ticket mounted on frontcover w. ms. "XVa", folio.
- The first work w. 1 leaf lacking lower outer corner w. loss of text. The second work w. some lvs. loose and partly waterstained in lower margin. Vellum binding stained; paper wrapper splitting on spine and worn.
= A surveyor Cornelis de Waeijer, who lived in Scherpenisse, was officially admitted to the profession by the Court of Holland on 25th of May 1656 (E. Muller and K. Zandvliet, Admissies als landmeter in Nederland voor 1811, p.169). Probably written in the province South Holland or Zeeland, with the examples given in the text of calculations "St. Annaland", "Bergen op Zoom", "Tholen", "Iersickedamme", "in 't Eijlandt Goes", "Poortvliet", "Westerkerke", "Scherpenisse", "Maartensdijck" and "Heensen Molen", locations which, according to the text, can all be seen from "Oudt Vossemaer". The works are instructional texts for surveying land with use of mathematics. Names mentioned are Archimedes, Van Ceulen (De Arithmetische en Geometrische fondamenten, Leyden, 1615), P. Ramus, Meetkonst (Amst., 1622) and Euclides.
The surveys done in the second work involve extremely complex calculations.
Furthermore, the manuscripts closely resemble the manuscript BPL1970 kept at Leyden University. The Leyden manuscript (by W. Craeye) is dated 1658 and it contains the note that it was "gecopieert met haest".
On the paper: the first work on paper w. watermark of a five-pointed foolscap w. the 2 outer points w. circles (not found in Laurentius) and the second work w. watermark coat of arms of Amsterdam w. "IM" or "MI" (not found in Laurentius but this type of watermark is not found until after ±1690). SEE ILLUSTRATION PLATE LXVI.