* For Sale by Superintendent of Documents. Paper, 25c. single copy, $1.00 a vol. (4 nos.).
Notes:
CONTENTS.—Calculation of maximum force between 2 coaxial circular currents; [by] Frederick W. Grover.—Construction of primary mercurial resistance standards; [by] F. A. Wolff, M. P. Shoemaker, and C. A. Briggs.—Note on resistance of radio-telegraphic antennas; [by] L. W. Austin.—Method of measuring earth resistivity; [by] Frank Wenner.—New relation derived from Planck's law; [by] Paul D. Foote.
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* For Sale by Superintendent of Documents. Paper, 25c. single copy, $1.00 a vol. (4 nos.).