232 



PHILOSOPHICAL NOTES ON 



But in order to convince the reader that this is the right 

 interpretation of the petiole glands of the cherry leaf, as also those 

 of the peach, apricot, &c., I shall place before him a very 

 interesting series of drawings taken from nature. 



Fig. 84 represents the bud-scale of a cherry tree, with two 

 adnate stipules and an undeveloped blade. On the margin of the 

 blade are glands. The lower one on the left is a fusion of two, 

 and would correspond to one of the petiole glands in Fig. 85. 

 The other marginal glands are fusions of the tooth-glands shown 

 in Fig. 86, the teeth not being develoi^ed. 



Fig. 85. Part of Cherry leaf: 

 (a, a) petiole glands. 



Fig. 86. Margin of Cherry leaf 

 showing tooth-glands (mag.).* 



Fig. 85 gives part of a cherry leaf, showing the two petiole 

 glands, representative of suppressed leaflets. 



Fig. 86 is the margin of a cherry leaf, enlarged to show clearly 

 the teeth-glands. 



Fig. 87 is part of an apricot leaf, showing the two glands 

 higher up, at the base of the leaf -blade. The glands of the cherry 



* These tooth-glands appear to be the nucelli of Warming. See Discussion 

 on the Ovule. 



