nothing ib 'cnown with regard to the strength of 

 -torn yellow pine; and for that reason toots aro to b 

 nado upon it, the material being flrnlehed by the lladera 

 ir Pino Company. 



Tapping experiments have aloo boon performed dur- 

 .0 pact two seasons, anr! several thousand pounds of 

 cruf.o oleo-rosin secured from troos on the Sierra National 

 Forest. Those tappings show that the ;rado t.nd yield of 

 turpentine rnrf rosin fron the oleo-resln is about oqual to 

 that of the Southern nines, fron \vhieh our conuercial 

 turpentine is ob'icinod. We havo to determine whether the 

 yield of oleo-rosln from a T ivon area of pine treos is 

 such as to warrant tapping on a ooimercial scale. 



Similar orpori-aonte to those on su<*ar pine, are 

 to be carried out, during the conln ' yor.r, on tho neodloo, 

 . :a and cones of tho yellov pine. 



Jeffrey Pine; 



Tapping ejcporinonts hr.ve also boon ..erformef. on 

 this species, flurin^ the pr.ct season, on the Laseon Uctionr.l 

 Foroat. T)io operation tr?:es lon~er as tho trood was found 

 to be ht-rdor than that of the other plnee, wiring ohlppinp 

 difficult. It is probably thct the Jeffrey pine oleo-resin 

 vrlll nut yield turpentine, but another product cr.lled 

 abieticne. The treos have, in the past, been tappof 1 by 

 prlvnto indivlcurls, who hove ^enufrctured medicinal 

 compounds fron) the distillato of the oleo-resin. 



Steam distillation e-t^eri'sents rill bo performed 

 on the needles, t^vlrr 8 cm 1 cones for fie seme pxirpoee as 

 those on the ou:ar end yello\v pines. 



Jeffrey pine fonco-posts have been 



crorsotod in i'oney Lt/je Vc.lloy, as a cost of 15 cents 

 ;^oct to the rhnohors. 



Lodc.e^ole r ino: 



Soverr.l million of these trees have ooen tttcclroc 1 . 



ood-borinc; incecto on t v .o Lacsen. The trees ere in 

 ..olc iorr.s rn<! sizes, and for that reason the Service he-s 

 j.rdo arrcn^cMcnts to Bhip a cnrloetf of t*aoia to the ^nn 

 Joa<"'iin J i -'it ano ""orei' Co,.~.-.y, for iosts as to their 

 availaoilit;/ for ->olo urpoeee. Tho Co-.rsprny Is to pny tho 



:n:;o of cu'vtir?, trans ;ortction, treating nnd setting. 

 If ."lie tric.l is successful a nr r '.ot ..ry )e foxirx' for the 

 dead rnO dyin-j lod^ojole, especially ns a nllroe^ vill, 

 in c):o coureo of t- o years, be built Uhrou^h tho Infested 

 crec. 



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