[SCIENTIFIC INSTRUMENTS]. -- DE COLMAR, Thomas. Instruction pour se servir de l'Arithmomètre Machine a Calculer. Paris, 1868. 8o. One folding plate. Original printed wrappers. -- SENNETT, Alfred Richard. Carriages without Horses Shall Go Being a Reprint of a Paper on Horseless Road Locomotion. London, 1896. 8o. Plates. Original printed wrappers. FIRST EDITION. -- FERGUSON, James. Select Mechanical Exercises: Shewing how to Costruct Different Clocks, Orreries, and Sun-dials... London, 1773. 8o. 9 folding engraved plates. Contemporary sheep. FIRST EDITION. -- CAJORI, Florian. A History of the Logarithmic Slide Rule and Allied Instruments. New York, 1909. 8o. Plates. Original cloth. FIRST EDITION. -- ECKERT, Wallace J. Punch Card Methods in Scientific Computation. [New York], 1940. 8o. Library cloth. -- MICHELSON, Albert Abraham. The Echelon Spectrocope. Offprint from: The Astrophysical Journal, vol.8, no.1. Chicago, 1898. Illustrations in text. Original printed wrappers. FIRST SEPARATE EDITION, PRESENTATION COPY, inscribed by Michelson on the front wrapper: "Compliments of the Author." -- MICHELSON and Edward Williams MORLEY. On the Relative Motion of the Earth and of the Luminiferous Ether. Offprint from: The Sidereal Messenger, vol.6, no.9. Northfield, MN: Carleton College Obseratory, 1887. 8o. Original printed wrappers. FIRST SEPARATE EDITION. -- MACMUNN, Charles A. The Spectroscope in Medicine. London, 1880. 8o. Plates. Original cloth. FIRST EDITION. -- THURSTON, Robert H. A Manual of the Steam-engine. New York, 1907. 2 volumes, 8o. Plates. Original cloth. Sixth edition. Together 10 volumes, condition varies. (10)