For very infested tree a Hanger outs and treats be saves 

 another tree the f ollowing year and probably frcn one to two 

 trees for several years thereafter* These broods of "beetles 

 do not generally fl3r far, and the billed trees show up in 

 groups. She tree with the living "brood is easily disting- 

 uished also the tree Irilled the previous year, and the year 

 "before that, "but "back of that they all Income what we call 

 "black tops". In a (Iay r s ride count up the grou s you see, 

 thinli that these groups will "be duplicated in the nesrfc fire 

 years if we do not prevent it, and you will get some idea of 

 wllat this part of the control work will mean to your Irorest. 

 I have only had reference to our sugar and yellow pine "belt 

 and have said nothing of species of "beetles in other species 

 of timber; that will have to come later; but the important 

 thing soonis to ine is to get "busy, and the sooner we stop 

 the yearlsr loss tho "better. .Hangers oftem have odd days 

 during tho winter that they could put in on this control worli, 

 aside from any regular control wor: the" ma3 r dp. 

 1:40 - Object and Method of Thinning Gtudy in Misied Conifer 



OT03I* 



last year attempted a thinning study on the Shasta. 



History of the stand. Area orignnally contained a 

 mi::ed stand of Y.P. , D.l?., S.P. and I.C. Possibly contained 

 about 75M bd.^c. per acre. Logged aver about 50 Drears ago. 



Placer tailin-s covered most of the area. Since then re~ 



264 



