of Control and Protection of Electric Systems. By Charles Proteus Steinmetz Biochemical and Engineering Aspects of Sanitary Water Supply. By George A Relation Concerning the Distribution of an Electrolyte between Water and Some Second Solvent and its Dissociation Constant in Aqueous A Study of the Quality of Platinum Ware A Direct-reading Device for Use in Computing Characteristics of Vacuum Tungsten Current Topics. 16, 62, 99, 100, 122, 123 Announcements. xi-xx Published by THE FRANKLIN INSTITUTE OF THE STATE OF PENNSYLVANIA, PHILADELPHIA FIVE DOLLARS PER YEAR (Foreign Postage Additional). SINGLE NUMBERS, FIFTY CENTS. Entered at the Post-office at Philadelphia, Pa., as second-class matter. Copyright, 1915, by THE FRANKLIN INSTITUTE. |