6i 



The information that we get from England 1 

 confirms the fact of the red colour of the heart of 

 the timber grown there. In that country it is 

 worth 35 M. per f.m. and that only for young 

 and rather knotty timber. In the course of twenty 

 years it has been shown that thorough forest culti- 

 vation has resulted in about 200 cubic metres per 

 hectare being produced. The bark is, moreover, 

 according to Semler 2 noticable for its tanning 

 properties (13 per cent.). The experiments made 

 in Prussia in 1900, according to the official 

 statistics, comprised an area of 146 hectares, and 

 the area not officially mentioned cannot be much 

 less, as in most cases the Douglas fir was not 

 planted by itself, but as a mixture with other 

 kinds. Amongst its most inveterate enemies in 

 may be mentioned weevils and roebuck. 



53. Sequoia gigantea, Decaisne, syn. Welling- 

 tonia, Giant Sequoia, Bigtree. 



Attempts at raising this genus of tree have 

 been made not only in France,3 Austria, and 

 England,! but also in Germany. In Wiirttemberg 



1 Simpson, "The New Forestry," 1900, p. 101. 



2 Tropische und nordamerikanische Waldwirtschaft und 

 Holzkunde, 1888. 



3 " Les Sequoias von Bourotte." " Revue des Eaux et Forets, 

 1887," p. 489. 



4 Simpson, t.c., 104. 



