32 



EXPERIMENTS IN AERODYNAMICS. 

 Fig. 2. 



^.75r 



250- 



225- 



2.00- 



1.75- 



1,50- 



1.25- 



1.00- 



0.75- 



0.50„ 



Uiu gram oi' Plane. 



?£: 



20 



0.50, 



Times of lalliii.^! 4 feet of horizonttil planes on the Planc-Drappcr. 

 Average weight of planes = 465 grammes. 



Abscissaj : = Horizontal velocities of translation in meters per second. 

 Ordinates : = Times of fall in seconds. 



