FORESTRY 339 



grew fast or slow. If you look at the rings near the 

 center, you will notice that they are thicker than those 

 near the edge. This shows that at first the young 



FIG. 177. The Sir Joseph Hooker oak, Chico, California. (Notice the size 

 of the tree as compared with that of the horse and buggy in front of it.) 



tree grows rapidly. But it can, as a rule, keep this 

 up for only a few years. Then it begins to grow 

 more slowly, and by and by stops growing. Then it 

 should be cut down to make room for young trees. 

 The small branches should not be left to feed forest 

 fires, but should be burned on the spot. Lumbermen 

 should be compelled by law to do this cleaning up. 



