334 



DXPEBIMENTS WITH PLANTS 



185. Epidermis of Holly, with thick 

 cuticle (c). 



8age Brush [Fig. 1871, Mullein [Fig. 188], Jdive- 

 finger, Immortelle, coverings of many winter -buds), or 



varnish and resin (cover- 



N^ ings of most winter- buds 



and many leaves when 



young; Cistus, Pines. 



0000^( etc.). 



(6) Reduced evapora- 

 tion obtained by rolling 

 the leaves (Corn,i many 

 Grasses) or keeping them 

 in a vertical position (Eu- 

 calyptus, Iris). 



(7) Storage of water 

 (and food) in thickened 

 leaves (Live-for-ever, Cen- 

 tury Plant, Hen-and- chick- 

 ens) , or in thickened stems 



186. Waxy covering of Sugar Cane (in the (Cactl, Fig. 18*j, Ctc). 



The stored food and water 

 are tempting to many 

 animals, hence the 

 Cacti are protected 

 by sharp spines. The 

 Century Plant is pro- 

 tected by the sharp 

 points of its leaves: 



form of rod-like outgrowths). 



187. Hairs of Wormwood or Sage-brush. 



iSee page 213. 



