TilK PAKTS OF A TREE. 



9 



Fig. 2.— Eoots of the Western Hemlock. This youug tree started on a fallen 

 Red Fir; its roots spread under the moss and litter, and when tire came they 

 were exposed. Olympic Forest Ili.serve, AVashington. 



Fig. 3. — Upturned skeleton roots of a Eed Fir. The small roots have heen 

 hnrned away and the others cleared of soil by the fire. Olympic Peninsula, 

 Washinirtou. 



