94 



PEACTICAL BOTANY 



the number of lateral twigs on the six -year-old portions of the 

 branches ranged from to 9 and averaged 3.2. 1 On the north 

 side of the tree, and somewhat inside its circumference, only 



FIG. 76. Development of leaf bud of pear 



A, a leaf bud of pear in autumn ; B, a leafy shoot derived from A, as seen in 



the middle of the following summer, with flower bud at tip; C, the fruit spur 



(B) in autumn, after the falling of the leaves. After Percival 



FIG. 77. Fruit bud of pear (same as C of Fig. 76), showing its development 



A, opening in spring ; B, later, developing flowers and leaves ; (7, later still ; only 



one flower has produced a fruit, the rest having fallen off. Below it, is a lateral 



bud which will continue the spur next year. After Percival 



1 Average of ten counts. 



