46 ANNUAL REPORT OF 



years, or more, the clear boles for a great height, which 

 yield the best lumber. A pine on open ground produces 

 too many limbs. It may be picturesque, but is not good 

 for timber. 



Another principle is that the forest must be admin- 

 istered so as to furnish a sustained yield. It must be 

 perpetual. The cutting of mature trees must be done in 

 a way to promote natural regeneration by seed. 



Last, but not least, forest fires must be prevented; for 

 without this there can be no such thing as forestry. 



EXAMPLES FROM ABROAD. 



The principles of forestry are the same everywhere, 

 but the revenue from forests is naturally greater in Europe 

 than it would be in this country, by reason of denser 

 population, cheaper labor and higher value of forest 

 products. 



For example, Bavaria has 2, 150,000 acres of state for- 

 est, ']'] per cent of which is coniferous, yielding a net 

 annual revenue of 13,222,145, or I1.50 per acre. 



France (exclusive of the colonies) has 23,000,000 acres 

 of forest, of which only 2,700,000 acres are state forest. 

 Of the latter, 600,000 acres are "protective" forests — 

 situated on mountains to prevent land slides, and on the 

 sand dunes of the ocean to prevent the sand from drifting 

 into the interior and submerging good land. The net 

 annual revenue from the 2,100,000 acres of productive 

 state forest is $1.91 per acre. 



France expends $600,000 a year for scientific forestry 

 in her province of Algeria. It is such things that make a 

 country truly great. 



There are in the whole kindom of Prussia 21,000,000 

 acres of forest, of which 6,000,000 acres are state forests 

 yielding a net annual revenue of $9,000,000, being at the 

 rate of $1.50 per acre, and more than the average Ameri- 

 can farmer clears from his field crops. 



