116 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 66 
machine then landed gently on the ice owing to the falling off of the 
motive power. 
In May and June several short test flights were made over the 
waters of Lake Keuka as shown in figure 138. 
Frc. 140.—Nearer view of the Column of Progress at the Panama- Pacific 
Exposition, 1915. Dedicated to aviation; Langley tablet on west side. Photo- 
graph by Butman. 
The accompanying photographs, figures 139 and 140, show the 
Langley Tablet on the Column of Progress, dedicated to aviation 
at the Panama-Pacific Exposition, 1915. 
