Excerpt from The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of This Art; With a New Set of Accurate Mathematical Tables The fourth section contains the nature Of Offsets, and the method Of casting them up by the pen. The fifth section contains the method of finding the areas by intersections. The sixth section shows how to enlarge or dimi'nish a map, or to reduce a map from one scale to another; also the manner Of uniting separate maps Of lands which join each other into one map of any assigned size. The seventh section contains the method of dividing land, or of taking off dr enclosing any given quantity. Section the eighth treats of surveying harbours, shoals, sands, Section the ninth treats of levelling, adapted to the surveying of roads and hilly ground, with promiscuous questions. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.