X CONTENTS. 



CHAPTER XIII. 



DURABILITY OF WOOD. 



Causes of decay, 230. The curing of wood, 234. Preserving of 

 wood, 235-240. 



CHAPTER XIV. 



FOREST ECONOMICS. 



Alarm about the destruction of forests, 241. Value of forest 

 industry of Minnesota, 242. Possibilities of yield of its forest area, 

 243. Forestry requires capital, 244. Normal growing stock, 241. 

 Normal income, 245. Capital growing stock, 246. Actual 

 income, 246. Increasing value of forests, 246. Unproductive for- 

 est lands, 247. European systems of forest management, 247. 

 Taxes on timber land, 248. Income from game preserves, 248. 

 Forest reservations and national parks, 250. Forestry vs. lumber- 

 ing, 252. Forest fire laws, 257. 



CHAPTER XV. 



TABULAR CLASSIFICATION, SYLVICULTURAL DATA, AND USES 

 OF IMPORTANT AMERICAN TIMBER TREES 261 



GLOSSARY OF TECHNICAL TERMS USED IN FORESTRY 307 



A LIST OF THE BEST BOOKS ON FORESTRY . . .318, 319 



PUBLICATIONS OF THE BUREAU OF FORESTRY AND OTHER 

 U. S. DEPARTMENTS OF SPECIAL INTEREST TO STUDENTS 320 



