The Gas-Engine Handbook

By E. W. ROBERTS, M.E.

has established itself as a standard of reference in

GAS ENGINERY.

2,000 Copies sold in one year.

The book contains 234 pages of just the kind of information you have been looking for on gas engines. It explains their principles of operation their faults and the remedies which apply, how to run them, how to design them and how to make a complete test. All rules and formulas are simple and easily understood by the average mechanic.

"All the most essential information connected with the gas or gasoline engine."—American Machinist.

"The only practical book of its kind."—Engineering and Mining Journal.

"Eminently practical in character."—American Electrician.

"Just the kind of information the buyer and the user of a gas engine wants and finds most difficult to obtain."—Mines and Minerals.