* For Sale by Superintendent of Documents. Paper, 25c. single copy, $1.00 a vol. (4 nos.).
Notes:
CONTENTS.—Characteristic equations of tungsten filament lamps and their application in heterochromatic photometry; [by] G. W. Middlekauff and J. F. Skogland.—Vibration electrometer; [by] Harvey L. Curtis.—Studies on silver voltamter; [by] G. A. Hullet and G. W. Vinal.—Wheatstone bridge for resistance thermometry; [by] C. W. Waidner, H. C. Dickinson, E. F. Mueller, and D. R. Harper, 3d.—Emissivity of metals and oxides: 2, Measurements with micropyrometer; [by] G. K. Burgess and R. G. Waltenberg.—Emissivity of metals and oxides: 3, Total emissivity of platinum and relation between total emissivity and resistivity; [by] Paul D. Foote.—Comparison of stellar radiometers and radiometric measurements on 110 stars; [by] W. W. Coblentz.
Availability:
* For Sale by Superintendent of Documents. Paper, 25c. single copy, $1.00 a vol. (4 nos.).