SCHIAPARELLI, G. V. "OSSERVAZIONI ASTRONOMICHE E FISICHE SULL'ASSE DI ROTAZIONE E SULLA TOPOGRAFIA DEL PIANETA MARTE: fatte nella Reale Specola di Brera in Milano coll'equatoriale di Merz durante l'opposizione del 1877." First printing. Contained in Atti della R. Accademia dei Lincei, Anno CCLXXV, 1877-1878. Serie Terza. Memorie Della Classe Di Scienze Fisiche, Matematiche e Naturali. Volume II. Roma: Coi Tipi del Salviucci, 1878. Illustrated with five lithographs, including a double-page areographic map, a map of the southern hemisphere, and a color plate showing four views of Mars. pp. 308-439. Text and plates are clean and fresh, although lightly toned at edges, and a few plates are detached. Thick 4to. (1145 pp.) bound in green pebbled cloth, with series title stamped at spine. Small chips at crown and the lower joint is just starting; light soiling overall.

During the great opposition of Mars in 1877 Schiaparelli observed the planet thoroughly using a Merz refractor; this exceptional instrument allowed Schiaparelli to detect even the smallest surface features which had been overlooked in earlier oppositions by larger telescopes. In drawing a complete picture of the areographic positions of the fundamental points for the construction of an accurate map, he stated that the interpretation of the phenomena observed on Mars was still largely hypothetical, varying among observers even when they saw the same details. He was the first to classify the features as "seas" and "continents." (But it was Secchi who first used the term "canal" in his observations of 1859.) Although Schiaparelli understood that the features he observed on Mars were stable, he was cautious in drawing conclusions on the nature of the surface of the atmosphere until he could establish that the seas, continents, and canals were identifiable with analogous terrestrial forms. (DSB). $2,500.00 #65161




84181EIFFEL, G., transl. Jerome C. HUNSAKER. THE RESISTANCE OF THE AIR AND AVIATION: EXPERIMENTS CONDUCTED AT THE CHAMP-DE-MARS LABORATORY. London: Constable & Co./Boston: Houghton Mifflin & Co., 1913. 2nd edition, revised and enlarged. xvi + 242 pp. 4to., red cloth sunned to brown at spine, stamped in gilt and blind. Cloth soiled, corners bumped. B/w photo reproductions, diagrams in the text; large folding b/w charts at rear. A few of the charts have pencil notations. Binding sound and text clean, complete. $450.00 #84181 order or inquire








[MASSACHUSETTS] REPORT OF THE COMMITTEE ON CHARLES RIVER DAM appointed under Resolves of 1901, Chapter 105, to consider advisability and feasibility of building a dam across the Charles River at or near Cragie Bridge. Boston: Wright & Potter Printing Co., State Printers, 18 Post Office Square. 1903. Prepared by the Committee on Charles River Dam: Henry S. Pritchett, Samuel M. Mansfield, Richard H. Dana, Joseph W. Lund, Secretary, John R. Freeman, Chief Engineer. Profusely illustrated with photographs, charts and maps, many large folded, and three folded maps in the rear pocket. 8vo. xvi,572 pp. Black cloth, blocked in blind to upper and lower board, gilt title at spine. Printed slip bound-in at title-page: "Compliments of Joseph W. Lund, Secretary of the Committee." Ink stamp of previous owner at front pastedown. Short closed-ears to a couple of maps, else a very fine copy, being clean and crisp through out. $550.00 #65349 order or inquire







79924HERTZ, H[einrich]. UBER STRAHLEN ELEKTRISCHER KRAFT. (Berlin: Gedruckt in der Reichsdruckerei, 1888.) Offprint from Sitzungsberichte der Koniglich Preussischen Akademie der Wissenschaften zu Berlin, 1888, No. 50, pp. 1297 - 1307. The text of a lecture on electric waves delivered 13 December 1888, it relates qualitative experiments undertaken by Hertz, at the Karlsruhe Polytechnic, on the analogy between electric and light waves. Passing electric waves through huge prisms of hard pitch, he showed that they refract exactly as light waves do. He polarized electric waves by directing them through a grating of parallel wires, and he diffracted them by interrupting them with a screen with a hole in it. He reflected them from the walls of the room, obtaining interference between the original and the reflected waves. He focused them with huge concave mirrors, casting electric shadows with conducting obstacles. This is the first print appearance, preceding its appearance in Annalen der Physik (36, p. 769) because, at this point in his career, Hertz was sending his papers to Hermann von Helmholtz to communicate to the Berlin Academy for quick publication before sending them to Annalen der Physik. It was later collected with Hertz's other experimental and theoretical works on electricity in Untersuchungen uber die Ausbreitung der elektrischen Kraft (Leipzig, 1892), which expanded and clarified the electromagnetic theory of light that had been put forth by the British Physicist James Maxwell in 1884. Hertz's experiments with electromagnetic waves led to the development of the wireless telegraph and the radio. (D.S.B.) 11 pp. Octavo, orange paper wrappers, with title information printed to front. Ink ownership stamp of physicist and noted socialist Leo Arons ("Dr. LEO ARONS | Strassburg i. E."), whose scientific work was primarily focused on the empirical research of electrical phenomena that governed Maxwell's theory. Pamphlet is creased vertically. Covers are nicked along edges and show general light dust-soiling. Front cover is detached and has a couple of light pencil markings. Hertz offprints are rare. $4,500.00 #79924


[ENTOMOLOGY] ANNALES DE LA SOCIÉTÉ ENTOMOLOGIQUE DE FRANCE, INTERRUPTED RUN 1859 - 1920, BOUND VOLUMES AND ORIGINAL WRAPPERS. Société Entomologique de France. Over 150 color plates, hundreds morte monochrome/tinted plates. Offered as a lot. 24 bound volumes, the rest in parts in original wrappers. Condition good to excellent. A few covers are detached or spines split in the paper issues, and spines of a few of the bound volumes are chipped (and backstrip is detached, 1859 volume). Very few plates are flawed: a few may have partial dampstaining. Overall the color plates are delicate and vivid, in excellent condition. As follows: Series 3, 1859-60, 2 volumes Series 4, 1861-67, 1869-70, 9 volumes Series 5, 1872-1879, 8 volumes Series 6, 1883-1890, 8 volumes 1891-1895, 1897-1899, 1902-1903, 1906, 1909, 1913-1920 (LX - LXXXIX), 20 volumes (1895 vol LXIV lacks part 3). Complete list available upon request. $3500.00 #80288 click image for more details, pictures


MERSENNE, Marin. LA VERITE DES SCIENCES CONTRE LES SCEPTIQUES OU PYRRHONIENS. FAKSIMILE-NEUDRUCK DER AUSGABE PARIS 1625. Stuttgart-Bad Cannstatt: Friedrich Frommann/Gunther Holzboog, 1969. [16] pp. + 1008 pp. 8vo., red cloth with gilt spine lettering. Fine. Text in French, facsimile of the Paris edition of 1625. The Minim friar Mersenne (1588-1648) was a mathemetician and music theorist, as well as Descartes' agent in Paris; he is perhaps best known in association with Mersenne primes and for his masterwork, Traite de l'harmonie universelle (1627). La Verite des Sciences marks his crossover from theological and philosophical writings. $350.00 #82063 click image for more details, pictures