Realm of Science January 20th 1914
Rigge, William F., S.J.
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First Paragraph: Professor W.J. Humphreys, of the United States Weather Bureau, one of our leading meteorologists, has a very instructive article on "Holes in the Air" in the Annual Report of the Smithsonian Institution for 1912. He begins it with the words: "The bucking and balking, the rearing, plunging, and other evidences of the mulish nature of the modern Pegasus soon inspired aerial jockeys to invent picturesque terms descriptive of their steeds and of the conditions under which their laurels were won or lost. One of the best of these expressions, one that is very generally used and seems to be a permanent acquisition, is "holes in the air." There are, of course, no holes in the ordinary sense of the term in the atmosphere—no vacuous regions—but the phrase "holes in the air" is brief and elegantly expressive of the fact that occasionally at various places in the atmosphere there are conditions which, so far as flying is concerned, are mighty like unto holes. Such conditions are indeed real, and it is the purpose of this paper to point out what some of them are, when and where they are most likely to occur and how best to avoid them."