MACHINE

Printed on a piece of card, roughly 50 x 22 cm., with the photographic side shiny and the reverse carrying the manuscript plan matt. In fair condition, folded four times and lightly aged, worn and chipped. The whole of the one side comprises a single photographic print, with 'Reproduced & Printed by No 5 Advanced Section AP & SS' at the foot. The upper part of this print reproduces an aerial photograph, roughly 15 x 22 cm, with six positions indicated: 'Kansas Cross', 'Gravenstafel', 'Passchendaele', 'Otto FM. D. 15a', 'Delva FM.

12mo, 12 pp. In original light-blue printed wraps. Stapled. Text clear and complete. On aged paper with slight damage from rusting of staple, and a little wear and loss to the corners of the wraps. 202 titles, nicely printed. Excessively scarce: no copy in the British Library or on COPAC.

4to bifolium: 2 pp, with address on otherwise-blank second leaf. Very good on lightly aged paper. Slight wear to extremities. A significant document, casting light on the relative states of engineering in early nineteenth-century France and England, and the role of the scientist in France at that time.

(Lord Kelvin) 19 leaves (printed one side only), 4to, not bound. A rare promotional brochure and price list for navigational instruments including the dry-card compass, the first modern compass. Thomson had invented the compass the previous year. The reports are accompanied by statistics and are from Captains of vessels experimenting with the new invention (White Star, P & O, etc.)