Cir. 201, Forest Service, U. S. Dept. of Agriculture. 



PLATE IV. 



LEAVES OF EMORY OAK AND ARIZONA WHITE OAK, SHOWING THE RELATIVE SIZE OF 

 FOLIAGE PUT FORTH BEFORE AND AFTER A RAINY SEASON; COLLECTED IN THE 

 CANELO HILLS DURING THE LAST WEEK OF SEPTEMBER. 



