The book ""The Adjustment of Observations: By the Method of Least Squares with Applications to Geodetic Work"" was written by Thomas Wallace Wright and was first published in 1906. The book provides a comprehensive guide to the method of least squares, which is used to adjust observations and measurements in order to obtain more accurate results. The book is aimed at professionals in the field of geodesy, including surveyors, engineers, and mathematicians. The book begins with an introduction to the method of least squares and its applications in geodetic work. The author then goes on to explain the mathematical principles behind the method, including the theory of errors, the laws of probability, and the principles of adjustment. The book also includes a detailed discussion of the various types of observations and measurements that are commonly used in geodetic work, including angles, distances, and heights. The book provides numerous examples and practical applications of the method of least squares, including the adjustment of triangulation networks, leveling networks, and traverse networks. The author also discusses the use of the method in the determination of geodetic constants, such as the figure of the earth and the gravitational constant. Overall, ""The Adjustment of Observations: By the Method of Least Squares with Applications to Geodetic Work"" is a valuable resource for anyone working in the field of geodesy. The book provides a clear and detailed explanation of the method of least squares and its applications, and is an essential reference for professionals in the field.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.