The Civil Engineer's Field-book: Designed for the Use of the Locating Engineer Containing Tables of Actual Tangents, and Arcs Expressed in Chords of 100 Feet for Every Minute of Intersection, from 0° to 90°, from a 1° Curve to a 10° Curve, Inclusive; Also Tables of Formulae Applicable to Railroad Curves and the Location of Frogs ... With Explanatory Problems