36 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 94 



I 3 5 7 9 II I 3 5 7 9 II 13 15 17 19 21 



Fig. 16. — The 11- and 21-month periodicities in BerHn tempera- 

 tures. Phase dominated by the 23-year cycle from 1819. Full and 

 dotted pairs of curves each cover a cycle of 23 years. 



Under A, wording should read " Mean I, III, IV, VI, VIII, IX." 



