124 ECONOMICS OF FORESTRY. 



but, to be sure, the cubic contents vary greatly on 

 account of the difference in specific weight, due 

 to the manner in which the wood is deposited. 

 This production in cubic feet is dependent on 

 the condition of the forest crop, varying from less 

 than 30 to 100 cubic feet, including the brush- 

 wood. Taking only the more useful wood down 

 to 3-inch diameter, which we call timber-wood, the 

 results of large forest administrations average 

 between 35 and 75 cubic feet, or about 55 cubic 

 feet in the average, deciduous-leaved forest pro- 

 ducing the smaller, coniferous forest the higher, 

 figures. Differentiating qualities still further, we 

 may state that to these figures corresponds a lumber 

 product of 200 to 500 feet B.M. 



In this connection it is significant to note that in 

 Switzerland the product in the government forests 

 was 71 cubic feet (maximum 96, minimum 29), in 

 the cantonal and communal forests 50, and in pri- 

 vate forests 47 cubic feet, i.e., 40 per cent, less 

 than in the government forests, an indication of 

 superior management in the latter. In France the 

 same difference appears, the government forests in 

 1876 producing at the rate of 49, the communal of 

 40, cubic feet. How the forest product responds 

 to superior management appears in all German 

 forest administrations. In Prussia, for instance, 

 the cut, supposedly gauged to the annual growth, 

 rose from 28 cubic feet in 1830 to 41 cubic feet in 

 1868, and to 51.5 cubic feet in 1900; in Saxony 



