A treatise on surveying, comprising the theory and the practice ;
A surveying textbook by William Mitchell Gillespie, revised by Cady Staley, published by D. Appleton in New York in 1887 for engineering students and practising land surveyors. The 266 line engravings are diagrams: lettered survey traverses with north arrows drawn as feathered shafts, dashed sight lines and offsets, plotted fields and hatched obstacles, plus instrument and terrain sections, offering a stock of compass roses, labelled geometric figures and dashed-line construction marks.
