HERO OF ALEXANDRIA TRANS WOODCROFT. The Pneumatics of Hero of Alexandria from the Original Greek. London, Taylor, Walker and Maberly, 1851. Small 4to, pp xix, [1], 117, [3], extra wood-engraved title page, text wood-engravings throughout, original sage green blind-stamped cloth, a little rubbed, faded and chaffed and with with short splits at spine ends, but a very good clean sound copy,