The aviation pocket-book for 1918; a compendium of modern practice and a collection of useful notes, formulae, rules, tables and data relating to aeronautics (1918)
Matthews, Richard Borlase, 1878- · London : C. Lockwood and son · leaf 394
ingdawn and sunset. Cyclonic conditions, on the other hand, shfmld naturally be avoidedfor safe flight. When the wind is veering from east to north-east,bumps are much more prevalent. South winds lu-ing rain andmists. It must not be overlooked that settled periods of calmweather usually cause a fog… … <0 ^ ?si o gging asjq -j l3^^ n33au39 30M3a3Jjia ¥o(f Prediction Chart. 252 METEOROLOGICAL DATA [div. IX
Aeronautics
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