Carnegie Inst. Washington Pub 289. Vol. Ill — Douglass 





A B 



A. Multiple standard with discontinuous periods at 7.0 (up to the right in right two-thirds) 

 and 9.0 (up to the left in left two-thirds); horizontal direction (thread) set at 8.0. 



B. Arizona ring record, FAM, 1700 to 1920 at 21.0 years: shows 23-year cycle dominating 

 early half (L)and 19-year cycle later half (R). Same data treated differently in figure 16, page 34. 



1400 



1900 

 I 



W\ 



/ N /; V 





14 



C. Analysis of Flagstaff tree ring records (see Chapter II, Cyclogram Reading). 



