334 



EXPEBIMENTS WITH PLANTS 



Sage Brush [Fig. 187], Mullein [Fig. 188], Five- 

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



varnish and resin (cover- 



winter -buds 



many le?,ves when 



Cistus, Pines. 



ings of most 



185. 



Epidermis of Holly, with thick 

 cuticle (c). 



186. 



Waxy covering of Sugar Cane (in tlie 

 form of rod-like outgrowths). 



Hairs of Wormwood or Sage-brush. 



and 



young; 



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 

 (Cacti, Fig. 18'2, etc.). 

 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: 



1 See page 213. 



