i6 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 8l 



THE OBSERVATIONS 



Month 



Ilarqua Hala, 



Ozone 

 area 



Wolfer 

 spots 



Magn. 

 ch. 



Month 



Jan. 



Feb. 



Mar. 



Apr. 



May 



June 



July 



Aug. 



Sept. 



Harqua Hala, 1923 



Ozone I Wolfer I Magn, 



No. 

 obs. 



21 



23 

 27 

 48 

 52 

 33 

 21 



31 

 37 



7 



2 



10 







3 

 10 



3 

 2 



73 



Ozone Wolfer 

 area | spots 



Montezuma, 1923 



35 

 19 



32 



Magn. 

 ch. 



0.9 



.6 

 •4 

 ■4 

 •5 

 •4 

 •4 

 •4 

 •4 

 •5 



0.6 



