1750. 4to; pp. [2], [2] title-page, 104, 95, 1-27, 38-52, 58-137; with hand-coloured title framed within armourial border, 25 throw out plates drawn in pen and ink and shaded, and numerous neatly drawn text figures and illustrations, some full-page and decorative, a number hand-coloured or shaded, and three mounted corrected images; penned in a single hand throughout; some occasional foxing and soiling, one or two small paper flaws, some edgewear to fore-edge of plates; final endpaper missing; bound in contemporary full calf, spine in compartments with raised bands, tooled in gilt, with evidence of previous lettering label, head of spine worn exposing headband, general light rubbing and scuffing to joints and covers, covers a little sprung, extremities and corners bumped and lightly worn. A most attractively compiled, and seemingly early to mid 18th century manuscript course on practical geometry. The name Chambaud appears on the first free endpaper, and with a further small signature of [?] Mercier found at the tail of the first page, though we have sadly been unable to discern the first name, but it could be Jean-Henri.
The volume begins with an attractively hand-coloured title framed within an armourial border incorporating a crown, a battle-axe, and six flags adorned with a blue cross. The compiler concludes the volume with a further small armourial flourish. Very much a practical work, full of day to day problems and examples, though with some occasional more whimsical and artistic illustrated section dividers (including flowers, and flower arrangements), the volume has the air of having been compiled by a either a French gentleman under private tutorship, or perhaps that of a student/apprentice surveyor or engineer. The volume has been divided into three parts, dealing in turn with ‘a treaty of practical geometry and practice of the compass’; ‘practical geometry or the measurement of surfaces’; and concluding with fractions. The whole volume is most attractively illustrated, containing numerous geometric figures, both within the text, and then 25 throw-out plates bound at the end of the volume. The majority have been rendered in pen and wash, though several have been hand-coloured, notably those at the beginning or end of a chapter.
As far as we can ascertain, there are no author citations within the manuscript, and so this does not appear to be a transcription of an already published work, and is very much practical rather than theoretical. Whilst the basic principles of geometry are outlined, and occasional remarks given, the focus is upon problems and examples to be solved, with no mention of theorems or corollaries. Having handled previous geometrical manuscripts, this does not feel, therefore as though it is following an academic course of instruction at a College.