No machine that ever was flown has excited more admiration from those on the ground than the graceful Antoinette monoplane, designed by the famous French motor-boat builder, Levavasseur. Its great tapering wings and long fan-shaped tail give it the appearance of a huge swallow or dragon-fly as it sails through the air, and whenever this type has appeared at the American meets it has received tremendous applause. The two best known models of the Antoinette are the type used by Latham in this country, and the "armoured" type, entered in the French military tests. The bow of the first-mentioned machine is shaped very much like the prow of a boat with the 50 to 100 horsepower 8-or 16-cylinder water-cooled Antoinette engine occupying the extreme forward part. The propeller is set in front of this, and is of the tractor type, drawing the machine through the air behind it. In the recent models of the Antoinette, the main plane, set at a slight dihedral angle, spread a little more than 49 feet (compare this with the spread of 28 feet of the Blériot). The two sides of the main plane taper from the body of the machine, but have an average depth from front to rear of 8 feet, which gives a fairly high aspect ratio of about 6. The total area is 405 square feet. The main plane also tapers in thickness, being nearly a foot through close to the body and tapering down to a few inches at the outer tips. The graceful tail at the rear has both vertical and horizontal surfaces gently tapering to the height and width of the elevating and direction rudders. The elevating rudder is a single horizontal triangular surface at the rear controlled by cables running to a pilot wheel at the operator's right hand. It has an area of 20 square feet. The direction rudder is composed of two triangular surfaces with an area of 10 square feet each. One is above the elevator and the other below, but both are worked in unison by wires connecting with a foot lever. The machine is balanced by a warping system much like that on the Wright biplanes we know so well. This is accomplished by wires connecting with a steering wheel at the pilot's left hand, so that he uses his right hand to steer his machine up or down, his feet to steer from right to left, and his left hand to maintain the balance. Of course, in making a sharp turn he uses his warping wheel as well as his direction wheel, because, as previously explained, it is necessary to incline the machine over toward the inside of the curve desired to be made. The pilot sits in the framework, above and a little back of the supporting plane.