Maunder (E.Walter) The Royal Observatory Greenwich,fronstispiece, illustrations, small ink inscription to title, original pictorial cloth, gilt, spine darkened, 1900 § Main (Thomas J.) and Thomas Brown. The Marine Steam-Engine, fifth edition, engraved frontispiece and 2 folding plates, illustrations, spotting, ownership inscriptions to title and endpaper, hinges starting, original cloth, split at head of upper joint, spine a little browned, 1865 § Rutherford (Sir Ernest) Radioactive Substances and their Radiations, plates and illustrations, occasional ink marginalia, inscriptions to title and pastedown, hinges starting, original cloth, spine a little browned, rubbed, 1913 § Dreyer (J.L.E.) History of the Planetary Systems, original cloth, spine browned, spine ends bumped, 1906, all but the second first editions; and 8 others, science, v.s. (12)