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Smithsonian
Institute has issued a circular in reference to offered for essays on " the nature and properties air in connection with the welfare of man." The a.re of the value of $10,000, ?2,000, and $1,000. Any enquiries lning the competition should be addressed to S. P. Langley ary of the Smithsonian Institute, Washington, D.O., U.S.A.
P^es, which
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Th e
these ?f
Smithsonian
Institute has issued a circular in reference to offered for essays on " the nature and properties air in connection with the welfare of man." The a.re of the value of $10,000, ?2,000, and $1,000. Any enquiries lning the competition should be addressed to S. P. Langley ary of the Smithsonian Institute, Washington, D.O., U.S.A.
P^es, which
pri2e5l0sPheric Conc
SeCr
IfoofcGfrtits jfimt) Iptises,
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