Carnegie Inst, of Wash. Pub. 289, Vol. II (Douglass) 



i V5u 



A. Forms of v-cut on stumps 



B. Complacent sequoia rings, D-8, grown in wet basin 



C. Sensitive sequoia rings, D-4, grown in uplands 



D. Hyper-sensitive or erratic yellow pine rings, Pr. 62, grown near lowest 

 yellow pine levels, Arizona 



