"Oh, you're catching on in first rate order," he told her. "Nothing but practice will make you letter perfect. And that comes soon enough when you handle the plane yourself. Now I'll fly us home. All I want you to do is to fold your arms and listen. Keep your eyes in the cockpit and watch the movements of the stick and rudder bar. My cockpit aft is equipped with similar controls. When I move my stick--yours moves--and vice versa. All right?"

"You bet."

He reached in his pocket and drew forth a small leather-bound book which he handed her.

"Here's your Flight Log Book, Dorothy. Write it up after every flight. There are columns for the date, type of plane, duration and character of flight, passengers or crew carried (if any) and remarks. A commercial pilot should have his log book certified monthly by an official of the company. For a student it is a good thing to commence during training. Stick it in your pocket," he advised as she thanked him. "And put on this helmet. It's a Gosport, with phones in both ear flaps, connected by a voice tube to this mouthpiece. I'll use that end of it to coach you through during flight."

"But this helmet is hard and stiff," objected Dorothy. "I'll bet it isn't nearly as comfortable as that nice soft leather one you're wearing."

"Possibly not. But until you're through with your instruction I want you to wear a 'crash' helmet. They're a lot of protection for the head in case of minor accident. No instructor worth his salt permits a student to use a soft leather helmet until you've had a lot of experience."

"Oh, very well then," she said, adjusting her heavy headgear, "you're the boss!"

"You bet I am when it comes to this kind of thing. If I weren't sure you were willing to give me strict obedience, I'd never propose teaching you. And please remember that this isn't a joy hop. The more attentive you are to instruction--the quicker you'll learn."

"I'm your willing slave, sir," she mocked good-humoredly, and drew the helmet strap tight beneath her chin.

Then as the engine roared and the plane rolled forward she felt the same thrill she had experienced the afternoon before when she and Bill had taken off in the amphibian. The same tightening of her muscles and beating throb of the pulse in her neck. They were soaring upward now and the sensation of smoothness became apparent after the jars and bumps of taxiing over the rough field. The sting of the wind on her face was exhilarating, but her eyes were streaming. Realizing that she had forgot to adjust her goggles, she pulled them down from the front of her helmet.