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THE Marine REVIEW 9 Automatic THE ELEMENTS OF | LU) NAVIGATION A short and complete explanation of the stan- dard methods of finding the position of a ship at sea and the course to be steered Designed for the instruction of beginners W. J. HENDERSON, Illustrated. mE Wire Kein The U. S. Automatic Injector isn't **¢{he Best " simpl because the U. S. Government adopted it. The US. Government adopted the U. S. me Automatic because it is (re best. Scientific tests prove that the U.S. Automatic has 100 per cent effici- ency, that it is ideally perfect, that there is absolutely no waste. Continuous use has demonstrated the U. S. Automatic the most re- liable and trustworthy Injector on the market, That's why over 200,000 engineers endorse it as the Best. : Note these Facts: --The U. S. Automatic has wider range, feeds hotter water, is the only injector with a drip cock--a mighty valuable feature, aud the only injector accompanied by a bona fide certificate of range and capacity. Want more fac's? Write for the Engineer's Red Book--Sent Free! This modest little booklet deals in facts--not theories. It has proved helpful to thousands of engineers. It will prove valuable to you. Free for the asking. The need of a short, simple, and yet comprehensive book on the art of navigating a ship has led the author to undertake the preparation of the present work. The aim of the book is to instruct the beginner, lead- ing him step by step from the first operations to the perfection of the art as found in the Sumner method. The instructions have been made as terse as possible, and yet the author believes that clearness has not been sacrificed. Fundamental principles have been ex- plained, but no attempt has been made to elucidate the higher mathematics on the subject. Students who have tried to learn navigation from books like Captain Lecky's inimitable "Wrinkles in Practical Naviga- tion", which is addressed to navigators only, or from Bowditch's "American Navigator", which is only for mathematicians, will, it is hoped, appreciate this little book. The explanations of the uses of the tables and the "Nautical Almanac" are a new feature in a work of this kind. American =H Injector Co. Detroit, CONTENTS Introduction Variation Deviation How to find the Deviation Leeway The Log The Lead-Line Charts Chart Sailing Dead-Reckoning Examples for Practice Working a Traverse Hove to Shaping the Course Navigation by Observation Sextant Adjustments Index Error : Hints on Taking Altitudes Correcting the Altitude The Chronometer The Nautical Almanac Apparent and Mean Time--The Equation Latitude by Meridian Altitude Latitude by Meridian Altitude of a Star Latitude by Meridian Altitude of a Planet Latitude by Meridian Altitude of the Moon Meridian Altitude below the Pole Latitude by Ex-Meridian Altitude of the Sun Latitude by the Polestar Compass Error by Azimuths Longitude by Chronometer (or Time) Sight Remarks on Longitude Longitude by Sunrise and Sunset Sights j Chronometer Sight of a Star Sumner's Method Example of Sumner's "Method with the Sun Example of Sumner Lines with Two Stars Great-Circle Sailing Distance and Danger Angles Allowance for Tides Keeping the Log Rating a Chronometer Care of a Chronometer Hints on Conducting Voyages Examples for Practice: Dead-Reckoning Shaping Course by Mercator's Sailing Latitude by Meridian Altitude of Sun Latitude by Meridian Altitude of Star Latitude by Meridian Altitude Below the Pole Latitude by Ex-Meridian Alti- tudes Latitude by the Polestar Longitude by Chronometer Sight PRICE $1.00 The Marine Review Cleveland A CHRISTMAS PRESENT FOR EVERY BOILER A resolution at this time to use only THE PENBERTHY AUTO- MATIC INJECTOR will save trouble for the future. You will be in good company, as there are more Penberthy Automatic Injectors in use than ali other makes combined. _ Our catalog of injectors, oilers and other engine-room special - ties sent to any engineer on request. : 'Our special Christmas number of the "Penberthy Engineer and Fireman", sent free on request. Year's subscription 25c. MADE IN CANADA BY PENBERTHY INJECTOR CO. The Penberthy Injector Largest Mfrs of Injectors in theWorld Co,, Ltd. Windsor, Ont. Detroit, Mich., U. 8S. A.