The school is a place for hard work and quick thinking. Detail in the repair shop is part of the course, as is also the use of the gasoline engine in motor trucks as well as in aircraft. (See Fig. 22.) Theory and practice are closely united: the former is carried on by means of bi-daily lectures, while the early morning hours are devoted to flying. Pilot-and-observer machines equipped with double control are used in instruction. The aviation instructor ascends with the student and allows him to manipulate the controls, only resuming the management of the airplane in an emergency. Needless to say, the life of an instructor is a most hazardous one and full of thrills. His duty is to be on the alert to correct errors in the manipulation of the machine. After every trip the instructor reviews, point by point, the features of the flight, showing the pupil his deficiencies and explaining how he may avoid them in the future. The instruction is terse but kindly, and the manner of imparting this information leaves nothing to the imagination. After watching student and instructor, and closely studying the finished work of an aviator, it is my opinion that in no other occupation must there be such perfect coördination between mind and muscle: the perfectly qualified aviator is the modern super-man.[C] [C] The army aviator of today is picked for his quickness of mind and body, and the first thing that strikes you about him is a sort of feline, wound-up-spring alertness. Then you note his reticence, the cool reserve of a man whose lot is to express himself in deeds rather than words. And, lastly, there is the quiet seriousness, verging almost on sadness, of a man who must hold himself ready to look death between the eyes at any moment and yet keep his mind detached for other things.--Lewis R. Freeman in the _Atlantic Monthly_. _Results of a Year’s Work._--During the year 1915, the students of the aviation school made 3,652 flights with a total time aloft of 1,516 hours, and a mileage of 95,000. As regards weather conditions affecting flights, it will be found interesting to note Chart No. 5 giving number of flights and duration for the fourteen months ending August, 1916, which shows that work progressed regardless of weather, and at an increasing rate.[D] In February, a military tractor-seaplane (an all-California product), 125-horsepower motor, with twenty-six gallons of gasoline, four gallons of oil, and three passengers, making a total weight of 3,100 pounds, reached an altitude of 12,362 feet. This was the world’s record, the previous altitude under the same conditions having been 9,000 feet.