COMFERjE. 



SILVA OF NORTH AMERICA. 



53 



flexible branches, coramemorates the services rendered by Professor William H. Brewer ^ to American 



dendrology. 



settlers and of miners and mine prospectors increases. It seems 

 hopeless, therefore, to expect that the few isolated trees of this 

 species can long escape their ravages. 



The danger of the extermination of Picea Breweriana is height- 

 ened by the fact that it has proved difficult to raise artificially. 

 Several hundred thousand seedlings were grown by Mr. Robert 

 Douglas of Waukegan in 1891, but they all gradually perished 

 during their first and second years. An attempt to raise this tree 



on a large scale in the Arnold Arboretum from seeds has been 

 equally unsuccessful, and all efforts to carry the seedlings through 

 their early stages have failed in England. Mr. A. J. Johnson has 

 transferred a few small trees from the Siskiyou Mountains to his 

 nursery at Astoria, Oregon, where they are now growing thriftily ; 

 and some of these plants are also flourishing in gardens near Port- 

 land, Oregon. 

 1 See viii. 28. 



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