SMITHSONIAN EXPLORATIONS, I93I 



3 





Fig. 3. — Camp and observatory of Mr. Moore at Fogo. From left to right 

 Mr. Moore, his assistant, and Mrs. Moore. The principal instrument for 

 measuring atmospheric humidity, brightness of the sky, and intensity of 

 solar radiation in the background. 





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'4 *$K 



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£ 



Fk;. 4. — The new instrument at Fogo. Close-up view of Mr. Moore with 

 the combination instrument for measuring atmospheric humidity, brightness 

 of the sky, and intensity of solar radiation. 



