Translated from Original French Manuscript by Waldemar B. Kaempffert with a Preface by Dugald Clerk. A Practical Treatise Setting Forth the Principles of Gas Engines and Producer Design, The Selection and Installation of an Engine, Conditions of Perfect Operation, Producer-Gas Engines and Their Possibilities, the Care of Gas-Engines and Producer-Gas Plants, with a Chapter on Volatile Hydrocarbon and Oil Engines. Scarce edition in this condition.