As nearly every layman knows, hydrogen is 8% more buoyant than helium, but is in disfavor for use in dirigibles because: 1) it is explosive and 2) it seeps through the fabric about 50% faster than helium. Last week the Navy Bureau of Aeronautics made known that a mixture of 90% helium and 10% hydrogen may be developed for the Navy's new superdirigibles ZRS-4 and ZRS-5. Such a mixture, suggested by German scientists, would enable a ship of that size (6,500,000 cu. ft. inflation) to carry 25 additional persons. More important, the go-to-io...
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