The book of the sky; a résumé of personal experience and observation (1922)
Luckiesh, Matthew, b. 1883 · New York, E. P. Dutton & Company · leaf 156
d. At first these are thin but rapidlythey become larger. If one lingers over his workfor a time he may be surprised to note as heglances skyward in an hour or so, that a vast flockof fair-weather cloudland has come into being.Eyes cannot see the whole process of evolutionbut the mind may see what… … CLOUD CAPERS 119 ward as though, they are reluctant to go whitherthe winds cominanded. Their attitude of yester-day is perhaps the more common of the two.Cumulus clouds are formed by vertical convectioncurrents, the fair-weather type being formedchiefly by mild differences in temperature…
Atmosphere, Upper · Clouds · Aeronautics
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