. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 16 5. By establLsliiiig a Loiiiplote stock of valuable trees on all forest soils. 6. By removing undesirable stock and replacing it with a better class of trees. 7. By establishing a proper proportion and a suitable distribu- tion of age classes. 8. By making every part of the forest accessible by means of roads, lanes, trails, paths, compartment lines, etc. 9. By making improvement cuttings. 10. By dividing the forest into working units (compartments) just as a farmer divides his farm into fields and the fields in
. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 16 5. By establLsliiiig a Loiiiplote stock of valuable trees on all forest soils. 6. By removing undesirable stock and replacing it with a better class of trees. 7. By establishing a proper proportion and a suitable distribu- tion of age classes. 8. By making every part of the forest accessible by means of roads, lanes, trails, paths, compartment lines, etc. 9. By making improvement cuttings. 10. By dividing the forest into working units (compartments) just as a farmer divides his farm into fields and the fields into patches. THE FORESTS AND FORESTRY. The original forest was so modified by the activity of man, or man working conjointly with natural agencies, that tlie source of our future wood supply became a question of great importance. A gen- eral survey of the field showed that we were consuming wood faster than we were producing it. This unbalanced economic condition due to tlie unregulated condition of our forest gave birth to the sub- ject of forestry. Man's attitnde towards the forest showed that he was a disturbing agent. AVithout him the forest of Pennsylvania would have remained practically undisturbed, indefinitely. Hence it might follow that the forest thrives best where there are no people, and consequently no forestry. Further, one often hears the state- ment: Formerly we had no forestry and plenty of wood; now we have forestry but no wood. This statement does not prove that for- estry is to be blamed for a deficiency in our wood supply, but it does prove tliat forestry is the chihl of necessity. Tliis child of nec- essity, which is at present just in its formative period, could never have been born if we had not been compelled to see that our timber resources were rapidly decreasing. The word forestry to many may be new. The most enlightened may have a rather vague conce])tion of its exact scope. It is often identified with the planting of individual trees, landscape work
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