On the History of Gunter's Scale and the Slide Rule During the Seventeenth Century

by Florian Cajori

GEOGRAPHY.—R. S. Holway, Editor. Price per volume, $5.00. Volume I completed. Volume II in progress.

GEOLOGY.—Andrew C. Lawson and John C. Merriam, Editors. Price per volume, $3.50. Volumes I-VII completed. Volume VIII in progress.

HISTORY.—Henry Morse Stephens, Editor. Volume I completed. Volumes II and III in progress.

MODERN PHILOLOGY.—Charles M. Gayley, Hugo K. Schilling, and Rudolph Schevill, Editors. Volumes I to VII completed. Volumes VIII and IX in progress.

PATHOLOGY.—Frederick P. Gay, Editor. Price per volume, $2.50. Volumes I and II completed.

PHILOSOPHY.—George H. Howison, Editor. Price per volume, $2.00. Volume I completed. Volume II in progress.

PHYSIOLOGY.—S. S. Maxwell, Editor. Price per volume, $2.00. Volumes I-IV completed. Volume V in progress.

PSYCHOLOGY.—George M. Stratton, Editor. Price per volume, $3.50. Volumes I and II completed. Volume III in progress.

SEMITIC PHILOLOGY.—William Popper, Editor. Price per volume, $4.50.

ZOOLOGY.—William E. Ritter and Charles A. Kofoid, Editors. Volumes I-XVII completed. Price per volume for first ten volumes, $3.50. Price for Volume XI and subsequent volumes $5.00. Volumes XVIII to XXI in progress.