George Frederick Charles Searle (1864-1954) was a British physicist who worked at the Cavendish Laboratory in Cambridge for 55 years. In this book, which was first published in 1934, Searle presents details on a selection of experiments relating to mechanics, elasticity, surface tension, viscosity, heat and sound. Illustrative figures and textual notes are incorporated throughout. This book will be of value to anyone with an interest in physics, the history of education and the history of science.