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country about the middle of the Eighteenth 

 Century. 



The black pine of Austria, P. I. Anstriaca, 

 grows vigorously in this country and is exten- 

 sively cultivated. It was introduced about 1830. 

 The leaves of the Austrian pine are shorter, 

 more rigid, and of a darker green, and it forms 

 a closer tree, and is less lofty, than the Corsican 

 pine. 



The Weymouth pine, P. strobiis, began to 

 be grown in England at the beginning of the 

 Eighteenth Century. Its slender leaves, produced 

 in fives, are of a light bluish green. A native of 

 Canada and North-Eastern America, the wood 

 of P. stvobus is much used in commerce, under 

 the name of " white pine," for floor boards and 

 inside work, its soft and even grain rendering it 

 particularly adaptable for such purposes. It was 

 at one time generally used for ships' masts and 

 spars, but in this resped the Douglas spruce has 

 superseded it. 



The Bhotan pine, P. cxcclsa, a native of the 

 Himalayas and introduced about 1830, is closely 

 related to P. stvobus. Its cones are larger, its 

 leaves longer, and the branches more drooping 

 than in the Weymouth pine, and being equally 

 hardy and more ornamental, it is far more ex- 

 tensively grown in this country. 



P. ccmbra, the "Stone pine" of Central Europe 



