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



I 



PLATE 21 



AD. 1830 



895 1906 



A. Eberswalde, Germany, ring sequence, G-6; sunspot maxima are marked beginning 

 with 1830; increased growth is found at or following the maxima. 



B. Eberswalde specimen, G-2; same sunspot maxima are marked. All rings may be 

 seen on this specimen, ending in the growth in 1912. The tree was cut in November 1912. 



