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It is "Presto! Change!" when the warm 

 Chinook wind appears. Wintry landscapes 

 vanish in the balmy, spring-like breath of this 

 strange, hospitable, though inconstant Gulf 

 Stream of the air. This wind is extra dry and 

 warm; occasionally it is almost hot. Many 

 times in Montana I have experienced the forc- 

 ing, transforming effectiveness of this hale, 

 eccentric wind. 



The completion of the big copper refinery at 

 Great Falls was celebrated with a banquet. 

 One of the larger rooms in the new building was 

 used for the banquet-hall. Out to this, a mile 

 or so from the city, the banqueters were taken 

 in a sleigh. That evening the roads were 

 snow-and-ice-covered, and the temperature was 

 several degrees below zero. A Chinook wind 

 arrived while the banquet was in session, and 

 although the feast was drawn out no longer 

 than usual, the banqueters, on adjourning, 

 found the snow and ice entirely gone, the earth 

 dry, and the air as balmy as though just off an 

 Arizona desert in June. 



The Chinook blows occasionally over the 



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