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184 various' engines and their peculiarities. In this, many power plants, which to most persons are but names, are minutely described and the peculiarities distin- guishing them brought out in such a way that each is found to typify some par- ticular phase or phases of hot-bulb engine practice or design. Another detail of internal cumbustion engineering comparatively little under- stood is the analysis of indicator cards, taken in much the same manner as those from steam engines. Pressure, cooling, temperatures and timing may be read from these, this book shows, as readily as those from steam plants. The real technique of hot bulb en- gines lies, of course, in their design; and this phase is thoroughly covered by _ Dr. Pollock, The various parts, as to dimensions, shape and the best suited metals for particular uses, are described and illustrated. A study of lubricating and fuel oils, also, forms a part of this technical study of engines and their operation. -- A chapter on auxiliaries, also, forms an interesting phase of the subject not generally touched upon by writers on the subject. : Ocean Steamship Traffic Management: By Grover G. Huebner; 275 pages; 5% x 9 inches; numerous charts; pub- lished by D. Appleton & Co.; for sale by Marine Review, $3 postpaid. This book designed to make a complete treatise to be used as an aid in training in- experienced help in the shipping busi- ness. It is an outgrowth of a timely sug- gestion by the federal board for vo- cational education urging the need for training in shipping subjects, and was written by Professor Huebner, who is professor of transportation at the Uni- versity of Pennsylvania, under the di- rection of Dr. Emory R. Johnson, representing the shipping board, and Dr. R. S. MacElwee, formerly of the feder- al board for vocational education, now of the department of commerce. This book, as well as the others of the series, is aimed to provide text books for instruction in shipping. In this volume there is represented in a system- atic order the principles, practices and forms of the shipping business. For convenience, the book is divided into three sections: the first dealing with organization and function of the various services contingent upon ocean shipping; the second part covers shipping docu- ments of all kinds required by private parties and by the United States and foreign governments; the third part has to do with ocean freights and regulation and contains chapters on ocean freight classifications, tariffs, rate making and is the first of a series © MARINE REVIEW regulation by the several governments. In short, it contains the elements of a complete education in the subject of ship management. 3 Modern. Marine Engineering; Part 1, The Fire Room; by Harry G. Cisin, marine and pe riers ae A sotished by the D. Van Nostrand Co., and for sale by MARINE Review for $3. net. Presented day practice in marine en- gineering is reflected in this handy vol- ume. Intended primarily as a text for schools and colleges, the work has been adapted to the needs of the practical man who desires by broadening his knowledge to advance in his profession. Fundamentals are presented offering the man who is preparing for an engi- neer's license, an intensive course. Li- censed engineer officers will find the work of value as recent data in con- cise form are included. This volume is devoted primarily to. the fireroom and presents detailed dis- cussion of marine boiler construction. Sections are given also on boiler room auxiliaries, boiler corrosion, fuels and combustion. In the final chapters gen- eral theory including definitions, calcu- lations, steam tables, etc., are presented. The book is based on the marine engineering course given during the war by the United States Navy Steam Engineering school at the Stevens in- stitute, Hoboken, N. J. First hand studies were made at boiler factories to obtain data on marine boiler construction. The illustrations were prepared by the author while at these factories or while on shipboard. Jane's Fighting Ships, 1920; an en- cyclopedia of the navies of the world, edited by Maurice Prendergast and Oscar Parkes; 720 pages, 8x1214 inches; cloth; published by Sampson Low, Marston & Co, Ltd.; for sale by MarineE Review for $10 net. This publication has now reached its twenty-third year, testifying forcibly to the need for this kind of work and to the thorough manner in which this particular encyclopedia thas met that need. The new edition thas been considerably enlarged and has been completely revised to include the changes brought about by the war, in the direct losses of fighting ships, in the disposition of German, Austrian, Turkish and Bulgarian tonnage, in the distribution of Russian tonnage among the different factions and also the dropping from the naval lists of obsolete vessels. The book contains 579 pages de- voted to the naval establishments of the world. The work is so indexed as to permit instant reference to any navy or to any warship. The principal April, 192) docks, navy yards and stations are shown in maps and silhouettes. are given of the various classes of war ships in each navy. Every type of vessel is shown both in drawings ang photographs together with descriptions of the armament and machinery, Nautical Tables: By Lieut. Har. old Bunker; 425 pages 6 x 9 inches ; special type; published by Imray Laurie, Norie & Wilson, Ltd.; for sake by the Marine Review, $6.00 postpaid This book, by a lieutenant of the United States naval reserve force and instructor during the war at the naval training station at Pelham Bay, N, y, throws new light on the solution of problems of ship navigation. It is declared to be the first to ex- plain that all problems may be quickly solved by altitude--azimuth tables and to explain clearly methods of procedure for time sights, compass errors, ex- meridian observations and St. Hilaire sights. These tables, which of course are the backbone of the book, are presented for the first time, it is claimed, side by side, so either value may be taken at once. As natural numbers are employed, in- stead of logarithms, great saving of time is effected, as well as a great re- duction in the likelihood of errors. in making hurried calculations. Necessary supplementary tables for correcting observed altitudes, differences of latitude and departure and meridional parts are contained in this book; so nothing else is required to solve the navigational problems but the nautical almanac, isstied yearly by the govern- ment. The method of solving the various problems by the shortcut way made possible by these tables is fully explained in the text of the book. These have been tested at sea and have been found to be accurate and expeditious. Certain of the correctional tables are arranged to unfold from the front and back of the book, so many problems may be solved with a single opening of the book. This has the added advantage of making detection of errors in cal culations more likely than where many tables have to be entered to take out various values. ' Ocean Shipping: By Robert Edwards Annin; 425 pages, 514 x 8 inches; illus- trated; published by the Century (0; for sale by Marine Review, $3 postpaid. This book deals directly with the fun damentals of ship management and opefa- tion. It is a practical guide based upon the experience of the author, rather than a discussion of theoretical propositions having to do with matters of shipping. Practically every phase of the actual problem of shipping is touched upom these include freights, labor problems,