The models are usually high powered and are driven by twin propellers of high pitch, carved from especially designed blanks. The aeroplane rises very quickly and will successfully combat a high wind. It is doubtless due to this fact that the model has won in a contest for altitude. It has repeatedly flown over a thousand feet. It does not follow, of course, that the beginner can equal these records since much depends upon the skilful adjustment of the model which comes only with experience. Another prize-winning aeroplane which has been much admired is the Leslie Robinson model. This model, which is of an original design, makes long and remarkably stable flights. In no other model has metal been used so extensively in construction. The propellers are made of aluminum as is the framework of the planes. Both planes are built in the proportion of about one to five, the smaller wing being carried forward. A novel feature of this model is the turned wing tips of both planes, which are slightly tapered and bent upward and outward at a slight angle. The model is beautifully finished in every detail. Skids of reed are used and the model is tilted upward sharply at an angle of nearly forty-five degrees. The motors, three feet in length, are composed of ten strands of square rubber, which will take about 400 turns. The model rises quickly at a sharp angle but soon comes to a horizontal position and flies with great steadiness. It weighs complete, ready for flight, nine ounces. Its metal construction makes it very durable and proof against many of the smaller accidents. The later machines have been equipped with geared motors, which work well in practice. The models built and flown by H. L. Watkins always give a good account of themselves. A comparison of the Watkins models of 1910 and 1911 shows that their inventor has kept closely to his original design and has made remarkable progress in lightening his machine while keeping it sufficiently strong to support two powerful motors. The wings have been cut down in size and made extremely light, the smaller wing being set well forward. Directional stability is gained by a small vertical and horizontal rudder, carried far in the rear of the rear main plane. Every part of the frame is kept extremely light. The model complete weighs but four ounces. The Watkins model stands on very light skids so arranged that a single point comes in contact with the floor, thus reducing the friction on rising. In many of his models Watkins covers his planes with thin red paper. The machine rests almost horizontally but rises very quickly on being released. Its extreme lightness often gives its flights a slightly waving form. Twin propellers, with unusually broad surfaces are used for driving, although, in some models, a single propeller is carried just back of the rear plane. It is an extremely graceful model in flight.