MOVEMENTS OF SEEDLINGS. 



47 



cotyledons remain buried (Fig. 7), the stem above 

 cotyledons, the epicotyl, breaks forth. These or- 

 gans are generally arched at first ; this form prob- 



FIG. 9. GERMINATION OF SQUASH (Cucurbita Pepo). 



ably saves the tender, growing apex from being 

 rubbed. 



" As the arch grows upwards, the cotyledons 

 are dragged out of the ground. The seed-coats 

 are either left behind buried, or are retained for a 

 time, still enclosing the cotyledons. These are 



