The Zone of Force Is TestedSeaton strode into the control room with a small oblong box in his hand. Crane was seated at the desk, poring over an abstruse mathematical treatise in Science. Margaret was working upon a bit of embroidery. Dorothy, seated upon a cushion on the floor with one foot tucked under her, was reading, her hand straying from time to time to a box of chocolates conveniently near.
"Well, this is a peaceful, home-like scene—too bad to bust it up. Just finished sealing off and flashing out this case, Mart. Going to see if she'll read. Want to take a look?"
He placed the compass upon the plane table, so that its final bearing could be read upon the master circles controlled by the gyroscopes; then simultaneously started his stop-watch and pressed the button which caused a
