TREES AND THEIR METHODS 101 



and soon had grown into a lusty little sapling com- 

 pletely within the body of its host. The catalpa 

 seemed to receive revived hope from this exhibi- 

 tion and put out some vigorous new lateral shoots 

 from its hollow walls. Here was an example of 

 one tree growing within the other. 



A case of the same kind is shown in one of our 

 illustrations. This young sequoia of the goosequill 

 redwood variety is sheltered within the hollow trunk 

 of its parent. It will undoubtedly have a success- 

 ful and rapid growth. 



Every thrifty tree stores quantities of nourish- 

 ing starch and gum in its wood for just such emer- 

 gencies. There come times when it is necessary to 

 put out buds from the main stem instead of the 

 remote branches. The starch and gum is what they 

 live on. Occasionally one sees a floating log or a 

 fence post or even a rustic bench sprouting in one 

 last desperate effort to retain a hold on life. 



When one sees two tree trunks twisted or curved 

 about each other, it is not always a case of brotherly 

 love. It is more likely a case of accidental prox- 

 imity with a corresponding struggle for supremacy. 



Two hemlocks once grew together on a certain 

 waterside rock until they became too big for their 

 combined foothold. The larger tree nearer the 

 land opened hostilities by spreading its boughs 



