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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