NO. .'! 



l\Ni,i,i;\ MEMOIB on MECHANICAL FLIGHT 



17 



Observer, 8. P. L. 



OBSERVATION OF NOVEMBER 20, I Mil. 



Locality, Upper Hall, Smithsonian Building 



Area of wiugs and tail in No. 30, 2357 sq. cm. = 2.53 sq. ft. 2.53 sq. ft. 

 are 2.7 or nearly 3 square feet of sustaining area to the pound. 



.95 = 2.7. Therefore, there 



The observations now ceased, owing to the breaking up of the model. 



