"Oh, trust Betty for that."

"It isn't that-- it's the motor. One never knows when they are not
going to 'mote.' But this one seems to be coming on well," and Grace
glanced critically at the various parts.

They were well out in Rainbow Lake now, and many eyes were watching
the race. One of the last boats to get away had given up, for the
girls in charge could not remedy the ignition trouble that developed
soon after they started. This left five. The Gem was second in line,
but behind her a very powerful boat was gradually creeping up on her,
even as she was overhauling the boat that got away first.

"Can't you turn on a little more gasoline?" asked Mollie.

"I think I can-- now," spoke Betty. "I wanted to give it gradually."

She opened the throttle a little more, and advanced the spark
slightly. The result was at once apparent. The Gem shot ahead, and the
girls in the leading boat looked back nervously.

"One of them is that pretty girl Will danced with so often at the
ball," said Mollie, as she got a glimpse of the rival's face.

"Yes, and the other is her cousin, or something," spoke Betty. "I was
introduced to her. It's mean, perhaps, to beat you, girls," she
whispered, "But I'm going to do it."

The chugging of many motors-- the churning to foam of the blue waters