(a) A pear and two apples just right for spraying, the calyx lobes spreading 

 and open, just after the petals have fallen. 



(b) One week after the petals have fallen. Almost too late to spray tha apples, 

 the calyx lobes having almosl completely closed over the CAvlty. The middle 

 fruit is that of a pear, which closes little. If any at all. 



PLATE I. 



Apples just after the petals have fallen and one week later. 



(From photographs by Sllng-erland, Cornell Experiment Station, Bull. 142, pp. 



B4 find BR.) 



