NO. 3 



SMITHSONIAN EXPLORATIONS, I915 



115 



Short flights were made from the ice. On March lo, after a 

 stationary propeller test on the ice showini^' a thrust of less than 300 

 pounds, the aeroplane was headed down the lake against a wind of 







Fig. 139. — The Column of Progress at the Panama-Pacific Exposition. 191 5. 

 Photograph by Walcott. 



six miles per hour for a trial flight. She ran over the lake at fair 

 speed with but four cylinders working. The poise on the ice was 

 steady. After a short run the rear skate arose clear of the ice ; then 

 the front skates of the machine were sustained in the air for some 75 

 feet, as shown bv the measured breaks in the traces on the ice. The 



