41 



by the burning down of previously fire-scarred trees, 



III. Thornton T. Hunger made an examination on 130 

 acres of typical yellow pine in the Blue Mountains of 

 Oregon, which had grown under conditions similar to 

 those found in the Sierras of California and which had 

 previously undergone periodic burning by light surface 

 fires. He found that one large tree was burned down 

 for every 1.12 acres burned over. 



IV. Table Showing Percentage of each Form of Injury 

 that Trees of various Species receive from Sur- 

 face Fires. T. T. Hunger - average of 329 1/2 Acees, 



Thus, in the above stand, 8.nd average of 33,^ for 

 all species was scarred by fire. Each recurring sur- 

 face fire will not only deepen the scars alreads for- 

 med, but will increase the number of fire-scarred trees 



