FOLIAGE. I 5 3 



is probable that it hinders the loss of water from the 

 leaf, and it may also prevent the attacks of Fungi and 

 minute animal enemies. 



The overlapping bud scales too are of great assist- 

 ance. It is unnecessary to describe these at greater 



Fig. 19. — Lupine. The same plant in A photographed about 12 noon and in 

 B about 7 p.m. The latter shows the evening curvature of the stalk and more 

 veriical arrangement of leaves. 



length. Lord Avebury (Sir John Lubbock), in his 

 book. On Stipules, has given a very perfect account 

 of the whole question. In the Beech there are no 

 less than i6 pairs, and in the Horse-chestnut 20 or 

 more. Generally these scales represent either the 



