TIMBEE OF THE UNITED STATES AND CANADA 109 
vegetations of the world gave way before it, their remains 
being buried. When the ice receded, just two species, the 
[By permission of U. S. Dept. of A(jriculture. 
ElG. 21. — Fire-scarred medium-sized "Big Tree" {Sequoia 
Washingtom'ana) on right. The Sugar Pine on left is 8 ft. in 
diameter. 
redwood and the big tree, survived, occupying a small area of 
high land in the west, where they just manage to hold their 
own and do not increase. The " big tree " is nowhere found 
