Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 422
air caught the door and clapped itshut. Jack stood in the little round chamber ofthe air-lock, considerably excited. It was just asPerry had described it. He felt the increasingpressure of air on his ear-drums. It was grow-ing painful. Perry had said that he must hold his nose and mouth shut and… … JACK SENT THE MAN SPRAWLING OVER THE SIUE OF THECAISSON INTO THE ICY RIVER. Then he began to soliloquize: The trap-doorin the floor is held up by the greater pressure ofair below. When the pressure above is the sameas that below, the door will drop open. Suddenly he jumped to one side of the…
Children's literature
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