Grace and Amy. "One of you switch on the electric lamps. At least they can see us, then, and can avoid us. Oh, I don't know what to do! I never thought of this!"
A sudden glow told that Amy had found the storage battery switch, for the red and green lights now gleamed. Again the on-coming steamer whistled, sharply—interrogatively. Betty answered, but she was not sure she had given the right signal.
"Why don't you start the motor?" she called to Mollie.
"I can't! It doesn't seem to work."
"The switch is off!" exclaimed Grace, as she came out of the cabin. With a quick motion she shoved it over.
"How stupid of me!" cried Betty. "I should have seen to that first. Try again, Mollie!"
Again Mollie pressed the button of the selfstarter, but there was no response. The Gem was still drifting, seemingly in the very path of the steamer.
"Why don't they change their course?" wailed Amy. "Can't they see we're not under control? We can't start! We can't start!" she cried at the top of her voice, hoping the other steersman would hear.
"The steamer can't get out of the channel—
