54 



EXPURIMDNTS WITH PLANTS 



43. 

 Later stage of 

 germination 

 of SQuasli : 

 the s e e d - 

 Jeaves are 

 escaping 

 from the 

 seed-cover. 



with dry seeds, put some elastic bands 

 about it and place it under water 

 (Fig. 41). 



Do you find any 

 devices to render es- 

 cape from the cover 

 easy? What seed- 

 covers become 

 softer on soaking? 

 Do you find any 

 covers which split 

 or break more easily 

 at certain spots, 

 thus permitting 

 the plant to escape 

 more readily? 

 Examine care- 

 fully seeds of the 

 Squash, Walnut, 

 Pecan, Almond, 

 and stones of 

 Peach and Plum, 

 minates quickly; 



select it for study. Place several 

 soaked seeds flat on the surface of 

 moist earth, cover with a piece of 

 glass, and observe them every day. 

 Notice the "peg" (Figs. 42 and 43) 



41. The result of placing 

 seeds in a bottle under 

 water. 



The Squash ger- 

 we may therefore 



