"You've got her," said Sally. "Now do the same." The Bishop shuddered, but the voice was inexorable. "Back with the stick. Come on, don't be afraid— right back! Now kick the rudder! Harder! That's right." Again the deadly flick. Again the round world spinning on a devilish wheel. "Opposite rudder now. Decisive! Stick forward." The great wheel stopped whirling. The wind in the wires rose to a scream. "Hi, you're not a single-seater fighter!" yelled Sally. "You've put the stick too far forward. Wow, we're doing one hundred and thirty miles per hour! Back a bit. Gently. Ease her. Centralize your rudder. That's got her. Now again." "Please not again!" murmured the Bishop into his speaking-tube. "Again!" said Sally firmly. "And don't come out of it so fast this time." Once again the whe

