This content is only available as a PDF.
*Summary of paper first read at the Richmond Meeting, Dec. 1938, and later in revised form at the joint Inst. Aeron. Sci. and Soaring Soc. Amer. meeting at Elmira, July 1, 1939. The fall paper appears in Jn. Aeron. Sci., Dec. 1939.
© 1940 American Meteorological Society