An interesting feature in connection with the Daimler motor is the arrangement of the cooling-water circulation for the cylinder jacket. The water is contained in a tank, from which it is circulated in the cylinder jacket by means of a small rotary pump. From the jacket it passes to the cooler. This consists of a system of several hundred small tubes over which a blast of air is driven by a fan operated from the motor shaft. Since the speed of the fan increases with the speed of the motor, the cooling is proportional to the production of heat in the cylinder. In addition to gas, which is applicable for stationary motors only, the fuel may be benzine of a specific gravity of sixty-eight or seventy one-hundredths, or ordinary lamp petroleum. The consumption varies according to the size of the motor, ranging from thirty-six to forty-five one-hundredths kilograms per horse-power hour for vehicles, or somewhat less for boats. He adapted these light motors to vehicles of many styles, and his persistent work in this connection has made the world-wide reputation of the Daimler Motoren Gesellschaft, now flourishing at Cannstadt, Germany. In 1888-89 the French interest in the light motors led to their adoption by Panhard and Levassor. The type then developed and known as Phenix motors, were soon copied in part at least by many other French makers, resulting in a modified form there known as the Pygmée. Work at Cannstadt progressed steadily, however, and many pleasure vehicles were made as well as small boats. The able assistance of William Maybach brought further credit to the company, particularly in view of the aspirating carbureter which, with such details as clutch and transmission mechanism, helped to perfect the Cannstadt automobiles. In the latter nineties the prominence of the Daimler Works as vehicle makers, distinguished from motor makers, again began to be noticed and soon their now famous Mercedes cars appeared. In recent years these machines have made remarkable records in races and all other branches of the sport. With a magnificent refinement of details in construction they are to-day looked upon as the pleasure vehicles _par excellence_. They have had a large vogue in all parts of Europe and are accepted there as among the most satisfactory vehicles in their class that are now made. Many of them have been brought to the United States, where they have been and still are in great demand. LEVASSOR Born at Marolles, in Hurepoix (Seine and Oise), January 21, 1843. Died, April 14, 1897.