146 



ARTIFICIAL FORMATION OF WOODS. 



possess a greater germinating poNver, and the resulting seed- 

 lings show a greater power of resistance against external 

 injurious influences, and a more vigorous development, which 

 in many species is due to the greater quantity of reserve 

 materials deposited in the seed. This superiority at the first 

 start should not be under-estimated, because it is recognisable 

 long after the seedling stage has been passed. In many cases 

 the dominating trees grow out of the seedlings which had 

 the best start. 



The actual weight of good seed varies according to locality. 

 The following figures are given as examples ; they represent 

 averages for clean seeds without wings calculated from the 

 best available data : — 



