54 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 62 



To show the precision of the experimental work, curves of Rx, Ry, 

 and Rz, plotted on pitch and yaw are given on figures 15 and 16. The 



50 g. 7» 8» 

 Ancle of Yaw 



Fig. 16. 



90 |o« j|» la' 13" 14* 15° 



individual observations are there shown by the small circles which 

 appear to permit a fair curve to be passed through them. 



