[Transcriber's Note: This etext was produced from Amazing Stories March and April 1930. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] _In a very recent issue of_ SCIENCE AND INVENTION _Dr. Hartman tells of the amazing discoveries he has made in the Mediterranean, off the coast of Sicily, when he went below the sea in his newly constructed steel diving bell, which was designed to withstand a pressure of 2,500 pounds per square inch or a sub-sea depth of about 5,000 feet. During his latest venture below the sea level, Dr. Hartman discovered a prehistoric city--perhaps the Lost Atlantis. Why, then, s…
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