To see Ruth walk away with Jack and leave him sitting there alone, was too much for Harold.
"Jack! I say, Jack!" he called. "Come back a minute!"
The boy and girl retraced their steps.
"What do you want?"
"I was just thinking—you might crawl under the car——"
"Eh?"
"I say, you might crawl under the car," repeated Harold.
"What for?"
"Jack 'er up!"
He jumped up from the running-board just in time to avoid the other's clutches.