OF THE- FRANKLIN INSTITUTE, DEVOTED ΤΟ SCIENCE AND THE MECHANIC ARTS. EDITED BY Dr. H. W. Jayne, Chairman; Mr. Edwin Swift Balch, Ph.D., Dr. Persifor with the Assistance of Dr. Wm. H. Wahl, Secretary of the Institute. VOL. CLIX.-Nos. 949-954. (80th YEAR.) JANUARY-JUNE, 1905 PHILADELPHIA : Published by the Institute, at the Hall, 15 South Seventh Street. 1905 Vol. CLIX.-January-June, 1903. INDEX. Accidents on American Railways..... Adiabatics, determination of exponents of. (Snook). Amperemeter for high potential currents.. (Snook). ... .401 199 .191 Anderson, Cyrus N. The U. S. patent laws, historically considered......51 Bradbury, Robert H. Radium and radio-activity in general. .225 Bronzes for steam uses, physical characteristics of. (Kneass). .65 .31 .422 Combustibles, the value of the flame of. (Mahler-Isherwood).. CORRESPONDENCE: Sellers-Bancroft. Correction in Wm. Sellers memorial sketch....464 Devereux, Washington. The inspection of electric conduits with espe- "Critical point," the..... cial reference to fire protection.. Diffraction gratings, replicas of. (Ives)... Division of tests established by the Dept. of Agriculture.. Electric conduits, inspection of, &c. (Devereux).. dissipation of fogs.. furnace construction. power transmission in France, long-distance. smelting of iron ores. furnace inventions. .146 .422 .299 .457 .16 .299 .454 .100 .142 .44 .462 |