ACORNS 



81 



The seed coat was entire 

 and it was sketched before 

 dissection. 



From the lower drawing 

 it will be noticed that the 

 seed is discoloured but 

 only slightly diminished 

 in size and still firmly 

 adherent to the plant. 

 The Collar, or the stalks 

 of the cotyledons, by 

 which it is attached can 

 be seen. 



A conclusion that one is entitled to come to from the 

 large root development and comparative cessation of upward 



growth is, I think, that root 

 room and upward growth are 

 linked together. The roots, no 

 matter to what extent they 

 grow, cannot gather sufficient 

 nutriment, sufficient electrical 

 energy from the soil in] the 

 small pot to enable them to 

 supply the needs of the grow- 

 ing plant. 



The Oak, as we learned long 

 ago, pushes its roots very deeply 

 into the ground and its branch 

 roots, with their filaments, 

 probably cover a not inconsider- 

 able area ; pointing to the 

 necessity for a large supply of 

 current. 



