1921] COOK—PEACH YELLOWS AND LITTLE PEACH 255 
The writer is indebted to Professor M. A. BLAKE and Mr. 
Cuas. H. Connors of the New Jersey Agricultural Experiment 
Station, for advice and assistance; and to Miss GERTRUDE E. 
MAcpPHERSON for cutting the sections and doing most of the work 
on the drawings. 
RUTGERS COLLEGE 
NEw Brunswick, N.J. 
EXPLANAT ION OF PLATES VI, VII 
Fic. -1 —Normal lest of Elberta a taken early in morning. 
Fic. 2.—Same taken in afternoon. 
Fic. 3.—Normal leaf of Hiley Felon taken in morning. 
Fic. 4.—Same taken in afternoon. 
Fic. 5.—Leaf of Hiley with yellows taken in morning. 
Fic. 6.—Same taken in afternoon. 
Fic. 7.—Leaf of Chinese eat oes yellows, taken in morning. 
Frc. 8.—Same taken in aftern 
Fic. 9.—Leaf of Hiley with little le peach taken in morning. 
Frc. 10.—Same taken in afternoon. 
Fic. 11.—Leaf of Elberta with litle peach taken in morning. 
Fic. 12.—Section of twig of normal Hiley taken in morning. 
Fic. 13.—Same taken in afternoon. 
Fic. 14.—Section of twig of wash with yellows taken in morning. 
Fic. 15.—Same taken in afternoo 
Fic. 16.—Section of twig from Hiley with little peach taken in a 
Fic. 17.—Same taken in afternoon. 
