NORTH POLE OF THE WINDS 



Etes proved to be a very competent mechanic 

 and was an invaluable aid to us in our building 

 operations. My concern in the Hassell flight was 

 not wholly unselfish, for I was deeply interested 

 in trans-oceanic aviation for itself. The flight 

 across the Greenland ice-cap could not fail to 

 bring out valuable scientific data, and Hassell on 

 his part promised to let me attach to his plane a 

 special self -registering instrument to automatically 

 record the pressure, temperature and humidity of 

 the air throughout this section of the flight. The 

 firm of Julian P. Friez and Sons of Baltimore, 

 manufacturers of precise meteorological instru- 

 ments, loaned the Expedition an instrument 

 specially constructed for this purpose, and this 

 instrument we took with us to Mount Evans. 



Before the Expedition sailed the plans of the 

 Hassell Flight had been largely perfected and a 

 special plane was building at the works of the 

 Stinson Aircraft Corporation. Spare parts in- 

 cluding a landing wheel and a spare propeller were 

 taken with the Expedition to Greenland. 



Two other flying projects were, moreover, seri- 

 ously considering a flight by the same route, and 

 in one of these Colonel Lindbergh was interested; 

 so that altogether I gave much time to the sub- 

 ject. While in Copenhagen I took up with the 



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