1924 TO 1930 

 ES 1931 TO 1935 



FOR DESCENDING SOLAR CHANGES 

 6 8 10 12 14 16 2 4 6 8 10 12 14 16 O 2 4 6 8 10 12 '4^ 



DEPARTURES AT WASHINGTON 



24 to 1930 compared to those 1931 to 1935. 



(9) 



