252 



FIRST YEAR SCIENCE 



structures to adapt them for their varied surround- 

 ings, and enable them to secure a living. 



Some plants lift their strong 

 arms high into the air to in- 

 tercept the sunbeams before 

 they strike the earth, while 

 others clothe the surface with 

 a dress of varied green. In 

 some plants, odor, nectar or 

 juicy berries attract the animals 

 whose aid is needed for fertiliz- 

 ing and scattering their seeds, 

 while in others, noxious odors, 

 prickles, thorns and acrid secre- 

 tions warn away animals de- 

 structive to their welfare. The 

 high- 



PRICKLY PHLOX. 



Notice the thorns by which it 



protects itself. 





est perfection of beauty, utility 

 and productiveness among 

 plants has been reached by 

 those of the land. 



The animals of the land, 

 surrounded by the air, which 

 bears no food solutions to inert 

 mouths, must be well endowed 

 with the power of motion in 

 order to procure their food. 

 They must either crawl over 

 the surface or be provided with 

 appendages to support their 

 weight against gravity. There 

 is no floating supinely in the 

 air as in the water. Movement, exertion, search are the 

 requisites of this realm. The eggs and young, as a rule, 



BIRD'S NEST. 

 A simple home. 



