THIS treatise is the most complete published for the practical engineer, covering as it does a course in mathematics, the management of marine engines, boilers, pumps, and all auxiliary apparatus, the accepted rules for figuring the safety-valve.

The book is divided into two parts: Part I, Construction: Part II, Operation; it contains 700 pages.

The volume is illustrated with plate drawings, diagrams and cuts, having an Index with more than 1,000 ready references, 807 Questions on practical marine engineering are fully answered and explained.

Size is 5³/₄ × 8¹/₂ inches, 1¹/₂ inches thick, and weighs nearly three pounds, strongly and durably bound in rich green cloth, with full gilt edges, and is the accepted standard on Marine Engineering.

Price $2, sent free to any address in the world. Money will be refunded if not entirely satisfactory.

THEO. AUDEL & CO., 63 FIFTH AVENUE, NEW YORK