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408 Book Review Marine Gas Engines; by Carl H. Clark, S. B.; cloth; 133 pages, 5 x 7% inches; published by D. Van Nostrand Co. and furnished by THE MARINE Review for $2. This book is in its second edition. The author has not endeavored to treat of the subject from a theoretical point of view but has confined himself to principles of construction and operation of standard types of equipment. In the present edition, the author has add- ed such material as was necessary to bring the book thoroughly up to date. The additions include valuable data on oil and gas engines of the diesel type. Many illustrations add clarity to the Ciscussions, In the forepart of the book, the author describes various types of en- gines and shows by diagrams just how each type functions. The subject of 2-cycle engines is next thoroughly ex- plained, followed by a description of 4-cycle engines. The problems of va- porizing and ignition are fully described and several illustrations of ignition de- vices in common use are shown. How to wire up a marine gas engine installation is a perplexing problem to the layman. The author treats this subject at length and by means of dia- THE MARINE REVIEW grams shows just how to proceed with this work. Sixteen diagrams are in- cluded in this section. The author points out that crude oil engines are operated on different principles than those employed with gas engines. Diagrams of several types of oil engines are shown. An impor- tant subject to consider with gas and oil engines is that of lubrication. Sev- eral lubrication systems are described. It is pointed out that oil engines can- not be lubricated by the splash system as the air in the base would carry a portion of the lubricating oil into the cylinders which would cause preignition and other troubles. Crank arrangements on multiple-cylin- der engines are fully described by means of diagrams and the whole subject of engines of this type is treated at length. The problem of reversing gas and oil engines is a complex one as mechanical reversing gears have to be utilized. Sev- eral types are illustrated and explained for the benefit of those looking for practical knowledge on the -- subject. Among the reversing devices described is the reversing propeller. Much propeller data is also includ- ed for determining the size and pitch of propellers for different installations. It is pointed out that a certain blade Tide Aids in Fighting NUSUALLY resourceful methods were shown recently in towing the burning steamship OLocKxson into port and in subsequently extinguish- ing the flames. The OLocxson, which -was reported by wireless on March 13 afire off Cape Mala with a cargo of gasoline, was taken in tow by the Pan- ama canal tug Gorcona about. 28 hours afterward. She had been abandoned by her crew. The ship sheered so badly © --sometimes as much as 90 degrees from the line of tow--that the 11-inch steel cable parted four times, making it necessary for the crew of the Gorcona to board her to make fast the line. So intense was the heat that it was impossible to make fast to the bow so that the cable was attached to the poop and she was towed in stern foremost. Explosions of the gasoline in the cargo occurred frequently, causing flames to shoot 200 feet into the air. On the evening of the fourth day, the Gorcona and her tow reached Bal- boa harbor, canal zone, and the Oxocx- SON was beached in a bed of mud. At low tide 10 and 12-inch square holes were cut in her hull with oxy-acetylene torches, permitting the water coming When in at high tide to flood the boat. Destruction of the Otockson vv flames was _ pre- vented by admit- ting the ocean into her holds after ordinary fire fighting methods had failed. The steamer. has since been raised and taken to the Bal- boa repair shops. July, 1929 area may be obtained by a relatively wide blade on a small diameter or by a narrow blade on a relatively large diameter. As the proper functioning of a gas engine in a boat depends largely on the manner in which it is installed, sey- eral pages are devoted to this subject which give simple and concise rules to follow. This includes such subjects as the engine bed, exhaust piping, feeq line, lining up shafting, etc. : The actual operation and care of gas engines is next treated followed by a chapter devoted to the power of engines. The book is well written and covers the subject in a comprehensive manner. Death of G. Ss. Dearborn George S. Dearborn, aged 62 years, died recently of a pulmonary embolism at his country home in Rye, N, Y.. after an illness of but three days. He was president of the American-Hawaiian Steamship Co. and a member of the firm of Dearborn & Lapham. Mr. Dearborn was. identified with many important shipping interests and was the organizer of the first mail steamship line between New York and Hawaiian islands. He was a member of numerous clubs. Ship Fire the tide had reached its highest level, a diver closed the holes by fixing plates over them, and with the help of streams of water played on the flames from above, the fire was extinguished on March 22. Difficulties were increased when sea water that- entered the oil fuel tanks of the OLocxson at high tide, forced the oil, which was lighter, through the vent pipes to the surface, where it ignited To prevent this wooden plugs were driven in the vent pipes. As soon as the fire was extinguished the holes were opened to lighten the weight on the ship and prevent her sinking deeper into the mud. The Oxocxson has since been floated and brought into Balboa where the cargo is being salvaged and plans drawn for repairing the vessel.