yellow pine and Doubles fir are easily able to come up through 

 ceanothus ancL other common shrubs. Squirrels lil ; :e to cache 

 their cones in willow an d service berry olunos "out reproduction 

 is usually absent from such places, unlike many of the old down- 

 tree caches. 

 REPRODUCTION - VIRC-I1I S2OTDS. 



Young growth is more plentiful in mi::ecl virgin stands 

 tlir.n in pure old yellow pine. Hundreds of acres of open yellow 

 pine on Hughes Greet: have little young growth, wliile nired 

 stands in the sane region have abundant reproduction. "his 

 condition is easily attributed to the absence of moisture in the 

 surface soil end to the herbaceous cover that prevents seeds 

 frou entering the ground in open stands. She mirture favors 

 Douglas fir except in places where the forest has "been opened. 

 Here j^ellow pine is able to overshadow the fir by reason of its 

 cuiclr growth. In short yell or; pine seems usually to require 

 an opening in the forest and a breaking of the surface soil as 

 necessary preliminaries to reproduction, while fir is able to 

 grow under shade and makes a continuous advance, which is at a 

 slower rate than in the case of pine. 



The ...uestion of seed 37 ears in relation to reproduction 

 is open for study. Bearing on this question is the case of 

 F.ancaclr Creel: where wonderful reproduction is coming in under 

 a virgin stand. The trees are mostly 12 years old, corresponding 

 in age with those of the adjoining d-rouse Plat where abundant 



