BY PROF. T. O'CONOR SLOANE,
Comprising five books, as follows:

The above five books by Prof. Sloane may be purchased singly at the published prices, or the set complete, put up in a neat folding box, will be furnished to Scientific American readers at the special reduced price of Five dollars. You save $2 by ordering the complete set. Five volumes, 1,300 pages, and over 450 illustrations. Send for full table of contents of each of the books.

Our complete book catalogue of 116 pages, containing reference to works of a scientific and technical character, will be sent free to any address on application.

We cannot permit the receipt of Sloane's Electrical Library to pass by without complimenting you upon the same. It is a most admirable work. Should be in the hands of all those who are interested in electricity.

PHILLIPS, ORMONDE & CO., Engineers.
Melbourne, Victoria.

I was highly pleased with the copy of Sloane's Electrical Library, which arrived in good condition. It is one of the most valuable works I possess in my library. The use of the Roentgen Rays in my profession has stimulated my desire for electrical knowledge greatly, and I consider Sloane's "Electrical Dictionary" a first-class book of reference. I shall be pleased to recommend it to my colleagues in search of such a work. Yours truly,

P.J. CLENDINNIN, M.D.,
Hon. Medical Electrician to the Melbourne Hospital.

MUNN & CO., Publishers, New York.

JUST PUBLISHED.

Second Edition, Revised and much Enlarged.

Gas, Gasoline and Oil Engines

By GARDNER D. HISCOX, M.E.
The only American Book on the Subject.

This is a book designed for the general information of every one interested in this new and popular motive power, and its adaptation to the increasing demand for a cheap and easily managed motor requiring no licensed engineer.

The book treats of the theory and practice of Gas, Gasoline and Oil Engines, as designed and manufactured in the United States. It also contains chapters on Horseless Vehicles, Electric Lighting, Marine Propulsion, etc. Second Edition. Illustrated by 270 engravings. Revised and enlarged.

LARGE OCTAVO. 365 PAGES. PRICE $2.50.

CONTENTS.

Chapter I.—Introductory, Historical. Chapter II.—Theory of the Gas and Gasoline Engine. Chapter III.—Utilization of Heat and Efficiency in Gas Engines. Chapter IV.—Heat Efficiencies. Chapter V.—Retarded Combustion and Wall Cooling. Chapter VI.—Causes of Loss and Inefficiency in Explosive Motors. Chapter VII.—Economy of the Gas Engine for Electric Lighting. Chapter VIII.—The Material of Power in Explosive Engines, Gas, Petroleum Products and Acetylene Gas. Chapter IX.—Carbureters and Vapor Gas for Explosive Motors. Chapter X.—Cylinder Capacity of Gas and Gasoline Engines, Mufflers on Gas Engines. Chapter XI—Governors and Valve Gear. Chapter XII.—Igniters and Exploders, Hot, Tube and Electric. Chapter XIII.—Cylinder Lubrication. Chapter XIV—On the Management of Explosive Motors. Chapter XV.—The Measurement of Power by Prony Brakes, Dynamometers and Indicators, The Measurement of Speed, The Indicator and its Work, Vibrations of Buildings and Floors by the Running of Explosive Motors. Chapter XVI.—Explosive Engine Testing. Chapter XVII.—Various Types of Gas and Oil Engines, Marine and Vehicle Motors.—Chapter XVIII.—Various Types of Gas and Oil Engines. Marine and Vehicle Motors—Continued. Chapter XIX—United States Patents on Gas, Gasoline and Oil Engines and their Adjuncts—1875 to 1897 inclusive—List of the Manufacturers of Gas, Gasoline and Oil Engines in the United States, with their addresses.

A Few Extracts of Notices from the Press.

It is a very comprehensive and thoroughly up-to-date work.—American Machinist.

The subjects treated in this book are timely and interesting, as there is no doubt as to the increasing use of Gas, Gasoline and Oil Engines, particularly for small powers. It gives such general information on the construction, operation and care of these engines that should prove valuable to any one in need of such motors, as well as those already having them in use.—Machinery.

What an engineer says:

I beg to acknowledge receipt of your book on Gas, Gasoline and Oil Engines, by Hiscox, by registered mail. I am highly pleased with the book. It is the best on Oil Engines I have ever seen, is not intricate in the calculations, and the illustrations are excellent. Yours truly,

S. DALRYMPLE, Chief-engineer S.S. "Talune."
Melbourne, Victoria.

MUNN & CO., Publishers,
SCIENTIFIC AMERICAN OFFICE,
361 Broadway, New York.

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