...Mr. Lake was saying calmly ; ' ' when the pressure of the air within is the same as that of the water without, no water can enter." With that Wilson dropped the iron door, and there lay the muddy bottom of the sea within touch of a man's hand. It was all easy enough to understand,...

...showed that the air pressure inside of the compartment was nearly equal to the water pressure without. Then Wilson opened a cock in the door. Instantly the...and the muddy bottom of the sea within touch of a man-s hand. It was all easy enough to understand, and yet it seemed impossible, even as we saw it with...

...showed that the air pressure inside the compartment was nearly equal to the water pressure without. Then Wilson opened a cock in the door. Instantly the...sharp hook at the end. This he pulled along the bottom . . . We were now rising again to the surface, after being submerged for more than three hours. I climbed...