Mollier chart of properties of ammonia.

Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1922, activities, finance, organizational leadership, and other information about scouting programs.

This bulletin is presented for the primary purpose of aiding the citrus industry in the Lower Rio Grande Valley and by a statement of authentic facts to apprise the public of the magnitude and possibilities of this rapidly developing industry.

In presenting this bulletin to the public it is the desire of the Department of Agriculture to furnish cotton growers of the state such information as to the best methods of fighting the boll weevil, as scientific investigation have discovered.

"The object of the investigation described in this report was to compare the damping coefficients of an airfoil as calculated from a knowledge of the static characteristics of the section with those obtained experimentally with an oscillation. The damping coefficients as obtained, according to the conventional notation, can be considered either as due to pitching or as due to yawing, the oscillation in these experiments being so arranged that the surfaces oscillate about a vertical axis. This is in reality the case when the influence is yawing about the standard Z-axis, but it can also be considered as a pitching motion when the model is so rigged that its standard Y-axis becomes vertical" (p. 118).