EXPLANATION OF PLATES. 



IV. — CHARACTERISTICS OF BITTER PIT. 



(Figs. 1-29.) 



FRONTISPIECE. 



Reproductions by the three-colour process direct from the fruit of Lord Wolseley and 

 Cox's Orange Pippin — 



(a) Lord Wolseley, about one-third ripe, showing surface pits or depressions 



and a median longitudinal section clearly indicating the brown patches 

 just beneath the green skin. 



(b) Cox's Orange Pippin, fully grown, showing surface depressions and a thin 



oblique slice removed to show internal brown spots. 



PLATE I. 



Fig. 



1. Esopus Spitzenberg, with depressed surface markings of Bitter Pit. (Nagamhie, 

 7.3.11.) 



2a. Annie Elizabeth, with depressed surface markings of Bitter Pit. (Burnley, 5.3.09.) 

 2b. Annie Elizabeth, with depressed surface markings of Bitter Pit. 



3. Cross section of same, showing brown patches just beneath the skin. 



4. Calville Blanche tite, with Bitter Pit. (Burnley, 14.12.11.) 



5. Cross section of same. 



