"Time is precious," agreed Louise. "But remember what Ted said, about inquiring at the Montreal airport for a landing place."

"I know, but we can't always do what Ted says. We're not beginners now, Lou. And I'm sure there will be a good place—the country is so open."

"O.K. with me. If tomorrow is a clear day, as it looks as if it is going to be, we can fly low enough to watch the ground pretty closely."

"Then it's settled," concluded Linda. "Give me ten minutes with this map, and I'll be finished. Then we can go to the movies, and buy a paper so that we'll have the weather prediction for tomorrow."

The next four hours passed pleasantly for the girls, and they stopped at a drug-store on their return from the early show at the theater, to buy a sandwich and some hot chocolate, which was all the supper they wanted. By ten o'clock their lights were out and they were fast asleep.

Soon after breakfast the following day, which was bright and sunshiny, Linda and Louise returned to the airport and took off into the bright blue sky. Everything seemed favorable; they had no idea that only a few hundred yards behind them a plane was following them, a plane whose pilot had no love for Linda Carlton or Louise Haydock.

"You didn't bring any coffee, did you?" asked Louise, as they sped on over the frozen country, glimpsing the St. Lawrence as they passed.

"No," returned her companion. "Only some sweet chocolate, matches and about three cans of baked beans, which I always carry. I've read a lot about making fire without matches, but if we ever have another experience like that one last summer, and come down in a lonely spot, I want matches. And something to keep us from starving."

Even in the companion cockpit, which was one of the nicest features of the Arrow Pursuit, conversation was rather difficult, and the girls only talked occasionally. Sometimes they would press each other's fingers just as a joyous signal of their pleasure in flying together.

It was Linda who first noticed the plane behind her.