FOREST TREES OF THE PACIFIC SLOPE. 



155 



Longevity.— Very little is known of the age attained by this tree. It may, 

 however, be regarded as very long-lived. Some of the largest trees are unques- 

 tionably from 700 to 800 years old. Trees from 24 to 40 inches in diameter are 

 from 200 to 510 years old. 



Fig. HO. — Thuja plicata. 



RANGE. 



Southeastern coast of Alaska and southward to northern California; eastward, through 

 southeastern British Columbia, through northern Washington to northern Idaho aud 

 Montana, and to Cascades of Washington and Oregon. 



