Light science for leisure hours; a series of familiar essays on scientific subjects, natural phenomena, etc., by Richard A. Proctor. Proctor, Richard A. (Richard Anthony), 1837-1888. Science. Q171 .P954 507 PRL With his Other worlds than ours ... New York, 1904. london longmans, green and co. 1913 1913 1904 Text v, 204 p. eng [The new science library, vol 1]