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54 state of activity as speedily as possible. “Hitherto and particularly by the failure of a contract the government has found it impracticable to procure the cannon requisite for the upper battery for the frigate CONSTITUTION at Boston. It has however, lately been stated that there were at Castle Island, in the harbor of Boston, nine- teen iron cannon of caliber to carry MUZZLE OF: 24-POUNDER (LONG) U. S. S. CONSTITUTION—THE LOWER HALF OF MARINE REVIEW offer on the part of the United States an engagement, either to return the same guns as soon as others can be provided for the frigate, or to re- place them with guns equally good, and in the meantime, if desired, to order the same number of thirty 2- pound cannon from Providence to, and for the defense of Boston Harbor. “Tt is presumed that the state of have had balls pur- Massachusetts THE PORT HINGES DOWN, THE UPPER HALF IS HAULED UP BY THE CROWFOOT LANYARD eighteen pound shot, which from their length and weight appear to have been designed for ships use, and to be improper for the embrazures of fortifications. That Captain Nichol- son has seen and examined these can- non and is very desirous to obtain them for his ship. “By the direction of the President, I have therefore to request of your excellency a loan of fourteen or six- teen of the cannon mentioned, and to | Reviews of Ship Stability and Trim Made Easy, by Oswald Watts, 53 pages, 5 x 7% inches; published by Crosby Lockwood & Son, London and furn- ished by MARINE REVIEW for $0.75 postpaid and in Europe by the Pen- ton Publishing Co. Ltd. Caxton House, London for 2 shillings and 6 pence net. This interesting little book is in- tended to meet all up-to-date require- ments on the important subjects of stability and trim, in a practicable and workable manner. It is necessary for efficient per- formance that the officers should know how to load a vessel to the best ad- vantage, and what can be done with the vessel when so loaded. Defini- tions, diagrams and the descriptive text clearly and simply covers this subject and should with practical ex- posely cast for these 18-pounders; if so, and your Excellency will furnish with the cannon a suitable quantity of shot, the United States will punc- tually and promptly return an equal quantity.” This request was honored, and Eng- lish made guns thus formed a part of the CONSTITUTION’S battery. Her ammunition and stores did not prove to be so difficult to assemble. Late Books perience serve to give to the officer the information he needs. The ex- amples given are from actual ex- perience at sea. Diesel Engines, by David Louis Jones, 565 pages, 6 x 9 inches; pub- lished by the Norman W. Henley Publishing Co., and furnished by MARINE ReEvIEW for $5.00 postpaid and in Europe by the Penton Pub- lishing Co. Ltd., Caxton House, Lon- don for 25 shillings, net. This is a practical book, written by a practical engineer who holds a commission as chief machinist in the United States navy and who is in- structor in the diesel engine depart- ment of the navy submarine school. It is a complete and modern work and it explains the elementary prin- ciples of thermodynamics and_ the December, 1926 principles of operation of all types of engines. Treatment is given in detail of the construction of engines, fuel pumps, fuel injection valves, starting and reversing systems, air compressors, governors etc. The operation, repair and mairten- ance of the diesel engine, adjust- ments, indicator cards, engine testing, the use of fuel and lubricating oil are all explained. The book has been very carefully prepared and the con- tents have been selected with the view of serving those seeking real in- formation. It is particularly adapted for the steam engineer who is pre- paring to operate diesel engines. We believe this book would be useful for every marine operating engineer and others chargable with the maintenance of diesel engined ships. Open Permanent in Cleveland In order to be better able to care for its rapidly growing business on the Great Lakes, the Sperry Gyroscope Co. has opened an office and display room in the Rockefeller building, Cleveland, according to an announce- ment recently made by Charles S. Doran, president of the Sperry com- pany. According to Mr. Doran, many of the new and interesting developments of the company will be placed on exhibit at these quarters where they may be inspected by officials and officers of the local steamship com- panies. It will also be of interest to steamship officials and officers to learn that the Sperry company is planning school in Cleveland it has done for the past three years. J. A. Tison who has been represent- ing the company in the Great Lakes district for the past four years, will be in charge of the new office. Barry to Work on Sales G. C. Barry has been appointed assistant to E. G. Hines, general sales manager of the American Brown Bov- eri Electric Corp., 165 Broadway, New York. Mr. Barry began his electrical career with the Western Electric Co. in 1912. Three years later he be- came associated with the Hart Mfg. Co., Hartford Conn., remaining until the outbreak of the war. In 1923, he returned to the Hart company as sales manager with offices in New York, and was shortly after appointed general sales manager at Hartford. Office to operate a this winter as John A. Moran, president of the Atlantic Basin Iron Works, Brooklyn, died Oct. 20 at his home in that city.