This volume on Geotechnical Testing and Instrumentation is a comprehensive manual on current practices of soil and ground testing of interest to civil and military engineers soil and foundation engineers agriculture engineers and soil scientists. In addition to standardized methods of laboratory and field investigations it includes experimental devices and procedures evolved by the author and some of the test techniques and instrumentation recently developed in Europe U.S.A. and other countries. Proceeding step by step and exemplifying with observations the testing and interpretation have been made easy to understand and use in actual practice. The book is profusely illustrated with plates and figures and appended with references.