Dublin, Hodges, Foster, and Co., 1876. Cont. full blindtooled cloth. Hinges broken, back somewhat discoloured. Top a. bottom of back somewhat worn. Internally clean and fine. Untrimmed. Lithogr. frontisp.,XXIV,194 pp.
The scarce first edition and the first announcement in bookform of the author's ""Theory of Screws"". ""The Theory presented in the following paper was first sketched by the author in a Paper..to the Royal Irish Academy (1871). The entire theory has been re-written and systematically arranged, in the present volume."" Through the next 30 years Ball elaborated his theory based on Non-Euclidean conceptions. He dealt with a four-dimensional space in the biased language of Euclidean geometry, the ""content"" of space was elliptic.
London, George Philip & Son, 1892. 4to (218 x 195 mm). In publisher's original blue cloth binding with gilt lettering to spine and front board. All edges gilt. Wear to extremities and hindges weak. Previous owner's name to half-title. Internally fine and clean. (XII), 57, 17 pp. + 72 plates.
First edition of Ball’s famous popular work on astronomy intended by him to facilitate the study of the heavens. Robert Ball, Irish mathematician and astronomer, possessed a rare gift for explaining complex scientific concepts in an engaging and accessible manner. The purpose of the present work was to bridge the gap between the esoteric world of astronomy and the general public.