Forestry
The trees of the forest grow by forming new layers of wood directly under the bark. Trees are held upright in the soil by means of roots which reach to a depth of many feet where the soil is loose and porous. These roots are the supports of the tree. They hold it rigidly in po...
Of our native trees, the white pine is one of the best and most valuable. It is a tall straight tree that grows to a height of 100 to 150 feet. It produces wood that is light in...
6. Chapter 6Our forests are exposed to destruction by many enemies, the worst of which is fire. From 8,000,000 to 12,000,000 acres of forest lands annually are burned over by destructive fi...
1. Chapter 1The trees of the forest grow by forming new layers of wood directly under the bark. Trees are held upright in the soil by means of roots which reach to a depth of many feet wher...
14. Chapter 14Of late years the demand for lumber by the world trade has been very great. Most of the countries which have extensive forests are taking steps to protect their supplies. They l...
2. Chapter 2Trees are as queer in picking out places to live and in their habits of growth as are the peoples of the various races which inhabit the world. Some trees do best in the icy nor...
17. Chapter 17The tree crop is a profitable crop for the average farmer to grow. Notwithstanding the comparatively sure and easy incomes which result from the farm woodlands that are well man...
9. Chapter 9Our National Forests include 147 distinct and separate bodies of timber in twenty-seven different states and in Alaska and Porto Rico. They cover more than 156,000,000 acres. If...
19. Chapter 19Westward the course of forest discovery and depletion has taken its way in the United States. The pine and hardwood forests of the Atlantic and New England States first fell bef...
7. Chapter 7Forest insects and tree diseases occasion heavy losses each year among the standing marketable trees. Insects cause a total loss of more than $100,000,000 annually to the forest...
15. Chapter 15The lumber industry of this country can aid reforestation by practicing better methods. It can harvest its annual crop of timber without injuring the future production of the fo...
13. Chapter 13A system of forestry which will provide sufficient lumber for the needs of our country and keep our forest land productive must be built on the extension of our public forests....
12. Chapter 12The public forests are steadily increasing in popularity as the playgrounds of the Nation. The woodlands offer splendid opportunities for camping, hunting, fishing and outdoor l...
18. Chapter 18For many years technical studies of wood were neglected. Detailed investigations of steel, concrete, oil, rubber and other materials were made but wood apparently was forgotten....
11. Chapter 11The rapid depletion and threatened exhaustion of the timber supply in the more thickly populated sections of the East has prompted several of the states to initiate action looki...
10. Chapter 10There are two great National Forests in Alaska. They cover 20,579,740 acres or about 5-1/2 per cent. of the total area of Alaska. The larger of these woodlands, the Tongass Nati...
3. Chapter 3Forests are necessary at the headwaters of streams. The trees break the force of the rain drops, and the forest floor, acting as a large sponge, absorbs rainfall and prevents ru...
8. Chapter 8Our forests of the New World were so abundant when the early settlers landed on the Atlantic Coast that it was almost impossible to find enough cleared land in one tract to make...
4. Chapter 4The forests of our country are the home and breeding grounds of hundreds of millions of birds and game animals, which the forests provide with food and shelter. If we had no for...
16. Chapter 16tear or damage the bark of trunks of standing timber. If possible, only the trees of unimportant timber species should be cut for making corduroy roads in the forests. This will...