12 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 85 



I next made templates and traced the five periods hitherto described in 

 a way to cover the entire interval 1918 to 1930. The total effect of the 



Decade 

 Jan. I 



Feb. 

 Mar. 

 Apr. 

 May 

 June 

 July 

 Aug. 

 Sept. 

 Oct. 

 Nov. 

 Dec. 



Table 3. — Ten-Day Solar 

 1Q18 1919 1920 1921 1922 19 



95S 

 945 

 959 



942 

 946 

 944 



951 

 9.?o 

 933 



945 

 947 



962 

 969 

 960 



1919 



943 



048 

 938 



951 

 930 



950 

 942 

 931 



943 



957 

 961 



953 

 921 

 945 



957 

 938 

 962 



951 

 961 

 950 



942 

 955 



938 

 942 

 937 



947 

 949 

 960 



958 

 951 



944 

 949 

 9S8 



[920 

 968 

 967 

 959 



1921 1922 

 1.956 1.924 

 1.953 1.946 

 1-95^ 



958 . 

 954 I 

 956 I 



956 I 



952 I 



950 1 



961 I 



950 I 



943 I 



934 1 



938 I 



945 I 



940 I 



951 I 



930 I 



927 . 



932 . 



951 • 



944 • 



944 I 



942 I 



950 I 



943 I 



951 I 

 946 I 



945 I 



957 I 



957 I 



956 ■ 



1 .911 

 1.947 



954 1-949 

 940 1.939 

 ... 1-932 



951 1-930 



941 1-937 



934 1-925 



946 1.924 



939 1-925 



941 



933 1.910 



936 I. 913 



945 1.920 



960 1.904 



957 1-913 



953 1-918 



I-919 

 1. 916 

 1.921 



... 1.932 



969 1.916 



959 1.926 



969 1.929 



966 



953 1-929 



949 1.935 



952 1.920 



956 I. 912 



938 I. 916 



1. 912 



937 

 929 



933 

 939 

 942 



.940 

 •937 



• 941 



.941 

 •938 

 •941 



•945 



• 948 

 .942 



•949 

 •944 



• 941 



•945 

 ■ 949 

 •947 



• 946 

 •947 

 •943 



.942 

 .929 

 •939 



•939 

 .941 

 •939 



•942 

 •943 

 •949 



•945 

 .948 

 •951 



Table 4. — ■Monthly Mean Solar Constant lvalues, igiS-ig^o 



five periodicities is summed up algebraically in curve B, which will 

 be seen to rei)resent the main features and even most details of 



