THE SKY OF THE ALPS. 273 



referred, the alternations of light and darkness resembled 

 the play of sheet-lightning behind the mountains. My 

 notes state that there was an element of awe connected 

 with the suddenness with which the mighty masses, ranged 

 along the line referred to, changed their aspect and defi- 

 nition under the operation of the prism. 



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California 



