GEOGEAPHICAL DISTEIBUTION 99 



tion. The whole matter depends largely upon 

 climate. Thus we find Conifers for the most 

 part in North America and in Europe ; the 

 Eucalypti or Gimis in Australia, though it is 

 true that they thrive in other parts of the world, 

 where they have been introduced, notably in 

 South Africa. In short, the mountain slope, the 

 tropical forest, the wind-swept sea shore and 

 the arid semi-desert, all have a vegetation 

 peculiar to themselves and in all parts of the 

 world, where the conditions are similar, the trees 

 bear a strong family resemblance to one another. 

 The timber trees we mentioned in the previous 

 chapter have been here separated geographically, 

 not according to the latest tenets of the science, 

 for that would entail considerable space, but 

 approximately into continents. 

 The African trees comprise : — 

 Alder, White Cape Platylofhus trifoUatus 

 Almond, Wild Brahejum stellatifoUum 



Ash Fraxinus excelsior 



Ash, Cape Ekebergia capensis 



Assegai Wood Curtisia faginea 



Birch, Cape Myrsine melanophleos 



Box, Cape Buxus Macowani 



Buckthorn Rhamnus catharticus 



Buckthorn, Alder Rhamnus frangula 

 Camwood BapMa nitida 



Canarywood Morinda citrifolia 



