122 



TIMBER. 



OBSERVATIONS ON TIMBER. 



The quantity of measurable wood of the various 

 timber trees which a certain extent of adapted ground 

 will carry, when come to full maturity, or when they 

 may be most profitably felled, and the quantity that 

 may be thinned out diuring the matm'ing, with the 

 time requisite to bring to value, with the relative 

 selling price per foot, and also whether the greatest 

 quantity of timber can be groAvn of one kind or 

 mixed, are questions of more importance than 

 might be judged, from the attention paid to the sub- 

 ject. Of our common timber trees, Scots fir, silver 

 fir, and spruce, larch, pinaster, black Itahan pop- 

 lar, Salix alba, commonly called Huntingdon willow, 

 red-wood willow, beech, Spanish chestnut, ash, plane, 

 elm, birch, oak, are here ranked nearly in the order 

 of quantity of measm'e which adapted ground in this 

 country will produce or support ; that is, that an 

 acre of close Scots fir trees, of whatever age, will ad- 

 measure more timber than an acre covered with any 

 other tree of the same size ; and a close acre of oaks 

 less. A little further south, in the temperate zone, 

 the large-leaved deciduous trees, particidarly the 



