Astronomy with an opera-glass: a popular introduction to the study of the starry heavens with the simplest of optical instruments, with maps and directions to facilitate the recognition of the constellations and the principal stars visible to the naked eye. New York and London: D. Appleton and Co., 1888. vi, 154 p. incl. illus., maps. 23cm. (Enlarged from a series of articles in _Popular Science Monthly_; see the preceding section.) Astronomy with the naked eye; a new geography of the heavens, with descriptions and charts of constellations, stars, and planets. New York and London: Harper and brothers, 1908. xiii, (l)p., 1 1., 246p., 1 1. illus., xiv charts (12 double). 21cm. Curiosities of the sky; a popular presentation of the great riddles and mysteries of astronomy. New York and London: Harper & brothers, 1909. xvi p., 2 1., 267, (1) p. incl. front., plates, charts. 21cm. The Einstein theory of relativity ... with illustrations and photos taken directly from the Einstein relativity film, illustrations by R. D. Crandall. New York: E. M. Fadman, inc., (c1923). 96p. front., illus. 19cm. ----. London: American Book Supply, 1923. 96p. 19cm. Eloquence, counsel on the art of public speaking; with many illustrative examples showing the style and method of famous orators. New York and London: Harper & brothers, 1912. iv p., 31., 2l4p. front, (port.). 19-1/2cm. How to use the Popular science library ... (and) History of science, by Arthur Selwyn-Brown; General index. New York: P. F. Collier & son co., (c1922). 2p.l., 3-384p. front., plates, ports. 20-1/2cm. (added t.-p.: Popular science library, editor-in-chief, G. P. Serviss, vol. XVI). The Moon; a popular treatise. New York: D. Appleton and co., 1907. xii, 248p. front., illus., 26 pl. 20cm. ----. London: D. Appleton and co., 1908. 260p. illus. 20cm. The Moon _in_ Frederick H. Law (ed.), Science in literature. New York: Harper and brothers, 1929. p. 69-83. Napoleon Bonaparte _in_ Thomas B. Reed (ed.), Modern eloquence. Philadelphia: John D. Morris and co., 1901. vol. 6, p. 983-1009. Other worlds; their nature, possibilities and habitability in the light of the latest discoveries. New York: D. Appleton and co., 1901. xv, 282p. front. (chart), illus., plates. 19-1/2cm. ----. London: Hirschfeld brothers, 1902. 298p. charts, illus. 19-1/2cm. Pleasures of the telescope; an illustrated guide for amateur astronomers and a popular description of the chief wonders of the heavens for general readers. New York: D. Appleton and co., 1901. viii, 200p. illus. (incl. maps). 23cm. ----. London: Hirschfeld brothers, 1901. 208p. 23cm.