The author of Cave of Raches pays tribute here to Auguste and Jean Felix Piccard, the Swiss born twins who proved in 1930 that man could survive the strato-sphere within pressurized cabins. Major emphasis is on Auguste's contributions to man's knowledge of cosmic rays, their qualities and densities at different altitudes, which he determined through ascents in an airtight gondola of his own invention. Jean Felix, who emigrated to America and married a daring American girl, ascended with her in a balloon from Ford Airport, Dearborn, Michigan to the stratosphere in 1934. Auguste's experiments with an apparatus to explore the ocean's depths is also brought up to date.