130 MISC. PUBLICATION 3 6 9, U. S. DEPT. OF AGRICULTURE 



r: — ;c r~ c<] — q xc-cc r L KxnccNac- 

 ■-Kcccqcc-^r-' — o o ~ 5 c O 



=> = Okic: 



I S 



C34T eo — eo — 



uncccccccccccccc 



IZ 



Ncgccccccc 



5 



d 

 o 



53 * 



II 



a g-3 



c.c2sssii o o 2.S?esa c » o-2"S 



C C Q O C O 



2 Q. 1 



i. -» i. 



so M 



