Bul. 36, Bureau of Plant Industry, U. S. Dept. of Agriculture. 
COLOR CHANGES IN LEAVES OF THE BuULLPINE 
i Leaves trom healthy tree. 2. Leaves from “Sorrel top” tree 
Feed-to »” Sh tge 4 
3.and 4.Leavesfrom trees CArning of the 
Plate ill. 
