MAY AND JUNE 



243 



of the pistil carried upward, together constitute the eye 

 of the apple. 



A cross section of the apple shows the ten-seeded, five- 

 celled ovary separated from the thickened calyx by a 

 green line. In vertical section this separation of ovary 

 and calyx is demonstrated more clearly still. , 



The green of the apple changes into more brilliant col- 

 ors as the sun ripens it, 

 thus making it attractive 

 to the small boy and 

 other animals, who, in 

 return for the pleasure 

 that it gives them, un- 

 consciously aid in the 

 distribution of its seed. 

 These, protected by their 

 hard, shiny coats, easily 

 survive both the damp 

 and cold. 



Method : 



Teach the blossoms 

 in season, pursuing the 

 same method indicated 

 on p. 22 et seq. for other 



\ 



Work of the Codlin Worm. Larva. 

 Codlin Moth. 



Pupa. 



flowers. Later use the 

 small green apples, to- 

 gether with cross and longitudinal sections through ripe 

 apples, to make clear this most interesting story. 



Lay emphasis on the law of compensation, here shown 

 in the fall of the petals and consequent devotion of the 

 energies of the plant to the manufacture of fruit. 



