THE GREAT FOREST TREE CROPS. 189 



has not succeeded when transplanted to Australia and 

 other situations outside its natural habitat, and it is to 

 be feared that its extinction is imminent. In the Botan- 

 ical Gardens at Sydney only one or two wretched 

 specimens are exhibited. Other varieties of the Dam- 

 maras are however seen there growing" well, and 

 apparently quite healthy, but all these are tropical 

 species imported from some of the South Sea Islands 

 of which their are four or five different kinds. 



The fear of being considered tedious will prevent 

 our noticing more of the forest products of the 

 southern temperate zone; as before closing this 

 section we desire to give a brief consideration 

 to the curious question of the succession of forest 

 growths, which take place when the primeval forest 

 is destroyed, either by human agency, or by accidental 

 causes, such as fire or tempest; for it has been a 

 universal subject of remark all over Canada and the 

 United States that, as a rule, when the destruction of 

 the original forest took place, the same kind of forest 

 did not reappear, but that a new sort of forest, com- 

 posed of different trees, replaced the old. 



But this rule evidently must not be accepted without 

 reservations, for in Oregon and British Columbia we 

 ourselves have repeatedly traversed tracts of recently 

 burnt forest, with the dead and withered stems of the 

 ancient pines still upstanding, while a new growth of 

 pine seedlings similar to the surrounding forest was 

 springing up from the parent soil as thick as grass 

 upon the prairie. 



Nature's great rotation of forest crops is neverthe- 

 less a matter of ascertained fact and as a rule where 

 a pine forest has been destroyed, it is replaced by a 



