204 



SUGAR BEET SEED. 



the seed has been planted, be not sufficient, or if the 

 soil be too loose (which is the case when proper rolling 

 has been neglected), there will be a considerable change 

 when O is reached. 



Instead of the seed, S, remaining underground 

 and the ascending root gradually finding its way- 

 upward, as in Fig. 60, the seed will be carried upward 

 and occupy the various positions, one, two, three, four, 



FIG. 62. 



Diagram shows two germs on t.lie same seed wliich have sprouted on 



different days. 



etc. When gravity does not separate the hard cover- 

 ing from the plantlet, it will still adhere, as shown in G; 

 under these circumstances, the plant generally per- 

 ishes. If we examined even more closely, we could 

 follow the development of the seed leaves. 



Nos. I to 5 (Fig. 6i)- show live positions of the 

 growth of the ascending and descending root; the seed 

 leaves remain wrapped around the albumen, so-called, 



