THE LITERATURE of NAVAL AND MARINE SCIENCE

On our shelves is the most complete stock of technical, industrial, engineering and scientific books in the United States. The technical literature of every branch of naval architecture, construction, ordnance, marine engineering, seamanship and navigation is well represented, as well as are the various other related subjects.

A large number of these we publish and for an ever increasing number we are the sole agents.

All Our Inquiries are Cheerfully and Carefully Answered and Complete Catalogs as well as Special Lists are Sent Free on Request.

D. VAN NOSTRAND COMPANY Publishers and Booksellers 25 PARK PLACE NEW YORK

VAN NOSTRAND'S NAUTICAL MANUALS 175 Pages 5 × 7½ Postpaid, $2.00

The Whys and Wherefores of Navigation

By GERSHOM BRADFORD, 2d. Navigating Officer and Senior Instructor New York State Nautical Schoolship Newport Late Nautical Expert Hydrographic Office, U.S.N.

Contents: Nautical Astronomy. Declination. Right Ascension. Precession of the Equinoxes. Time. Sidereal Time. Equation of Time. Calendar. Corrections for Observed Altitude. Index Correction. Semi-diameter. Refraction. Dip. Parallax. Circum or Ex-Meridian Altitude. Polaris. Observations for the Correction of the Compass. Longitude. Sumner Method. The New Navigation. The Moon. Charts.

An American book of intimate and interesting information on the subject of Navigation. If you want to know "why," own and study Bradford. It is a book for the man who likes to understand his subject thoroughly—simple, clear, complete.

VAN NOSTRAND'S MILITARY BOOKS 231 Pages 51 Plates—Many in Colors Pocket Size Price $1.00

MILITARY and NAVAL RECOGNITION BOOK

A handbook on the organization, insignia of rank, and customs of the service of the World's Important Armies and Navies.

BY Lieut. J. W. BUNKLEY U. S. Navy

A complete, correct and fully illustrated guide to the insignia of our army and navy as well as of those of the nations engaged in the war, compiled from official sources and useful alike to civilians as well as to the Army and Navy.

You will need this book to help you recognize our boys at home and to distinguish the other boys "over there."

D. VAN NOSTRAND COMPANY HEADQUARTERS SINCE 1860 for MILITARY AND NAVAL BOOKS 25 Park Place NEW YORK

VAN NOSTRAND'S NAVAL BOOKS 730 Pages 6¼ × 9¼ Postpaid $6.50 159 Full Page Plates 10 Color Plates

Modern Seamanship

By Admiral Austin M. Knight, U. S. N.

SEVENTH EDITION REVISED AND ENLARGED

CONTENTS—The Hull and Fittings of a Ship. Rope. Knotting and Splicing. Mechanical Appliances on Shipboard. Blocks and Tackles. Handling Heavy Weights. Compass. Log and Lead. Submarine Signals. Boats. Handling Boats in a Surf. Ground Tackle. Carrying Out Anchors. The Steering of Steamers. The Rules of the Road. Manoeuvering to Avoid Collision. Piloting. Handling a Steamer Alongside a Dock. Placing a Ship in a Dry Dock. Weather and the Laws of Storms. Handling Steamers in Heavy Weather. The Handling of Torpedo Vessels. Keeping Stations and Manoeuvring in Squadron. Towing. Rescuing the Crew of a Wreck. Man Overboard. Stranding. Hints for Junior Officers Doing Line Duty. Appendix.

The official text book at the U. S. Naval Academy and in use throughout the service. Describes the handling of all vessels, men-of-war, merchantmen, naval auxiliaries and small boats.

VAN NOSTRAND'S NAUTICAL MANUALS 150 Illustrations 5 × 7½ about 400 pp. In Press

HANDBOOK FOR THE CARE AND OPERATION OF NAVAL MACHINERY

By Comm. H. C. DINGER, U. S. Navy

Third Edition, Revised and Enlarged by Lieut. Comm. H. T. Dyer, U.S.N.

This new, revised and enlarged edition will be of use to all engineers and will help any one that has to do with nautical matters. The explanations and definitions are so plain that save in a few cases the layman can take up the book and by reading the section he is interested in can understand the point at once. Special care has been exercised to cover all points dealing with the usage on United States vessels. A glance at the book will show the infinite number of things that must be attended to by the engineer, who nowadays is the main factor in the ship's welfare.

D. VAN NOSTRAND COMPANY Publishers and Booksellers 25 PARK PLACE NEW YORK