Our National Forests is a public-domain classic of science by Richard H. D. Boerker.
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ILLUSTRATIONS
Figure 1. An observation point for finding forest fires. Vigilance is the watchword on the National Forests. During During 1916 forest officers extinguished 5,655 forest fires. Photo by the author Frontispiece
FACING PAGE
Figure 2. A typical National Forest landscape in the high mountains. Potosi Peak, 13,763 feet, from Yankee Boy Basin, Uncompahgre National Forest, Ouray County, Colorado xviii
Figure 3. The climate of most of the National Forests is severe. This view was taken in the early summer and shows the high mountains still covered with snow. Most of the National Forest lands are therefore of small value for agriculture. Photo by Abbey xxviii
Figure 4. On many high mountains on the National Forests snow banks persist throughout the summer. This view was taken in the latter part of August. Lassen National Forest, California. Photo by the author xxviii
Figure 5. The Big Trees. "Mother of the Forest" in the background. North Calaveras Grove, California xxxii
Figure 6. A scene on one of the famous National Parks. Upper Lake, Glacier National Park, Northern Rockies, Montana xxxvi
Figure 7. The remains of the old boiler house. The town once had a sawmill, planing mill, lath mill, besides modern conveniences. All these are now gone after the forests have been cut. Lemiston, Montmorency County, Michigan xlii
Figure 8. Deserted houses, abandoned after the sawmill left. These are the remains of what was once a prosperous town. Lemiston, Montmorency County, Michigan xlii
Figure 9. Forest officers in front of the Forest Supervisor's summer headquarters. Note the many telephone wires that lead from the office. This is 50 miles from the railroad. Lassen National Forest, California 32
Figure 10. Scene in front of the Forest Supervisor's headquarters. Sheep leaving the National Forest summer range in the fall to go to winter range in the valley. Lassen National Forest, California 32
Figure 11. Forest officers and lumberjacks burning the slash resulting from a timber sale. The snow on the ground makes the burning less dangerous. Washakie National Forest, Wyoming. Photo by the author 38
Figure 12. Forest officers at a winter timber-cruising camp repairing snow shoes. Besides cruising the timber, these men make a logging map of the government lands, to show how the timber can best be taken out. Lassen National Forest, California. Photo by the author 38
Figure 13. A forest fire lookout tower on Leek Springs Mountain, Eldorado National Forest, California 50
Figure 14. A typical Forest Ranger's headquarters. Idlewood Ranger Station, Arapaho National Forest, Colorado 52
Figure 15. A typical view of the National Forest country in Montana. Forest Service trail up Squaw Peak Patrol Station, Cabinet National Forest 54
Figure 16. Forest Rangers repairing a bridge over a mountain stream. Arapaho National Forest, Colorado 56
Figure 17. A forest fire lookout station on the top of Lassen Peak, elevation 10,400 feet, Lassen National Forest, California. The cabin was first erected complete in a carpenter's shop in Red Bluff, about 50 miles away. It was then taken to pieces and packed to the foot of Lassen Peak. On the last two miles of its journey it was packed piece by piece on forest officers' backs and finally reassembled on the topmost pinnacle of the mountain. Photo by the author 58
Figure 18. Forest officers and laborers building a wagon road through trap rock. Payette National Forest, Idaho 58
Figure 19. Drying pine cones preparatory to extracting the seed. Near Plumas National Forest, California 66
Figure 20. Extracting tree seed from the cones. The dried cones are shaken around until the seeds drop out through the wire mesh which forms the sides of the machine 66
Figure 21. Preparing the ground with a spring-tooth harrow for the broadcast sowing of tree seeds. Battlement National Forest, Colorado. This view was taken at approximately 10,000 feet elevation. Photo by the author 70
Figure 22. A local settler delivering a load of Lodgepole pine cones at the seed extractory, for which he receives 45 cents per bushel. Forest officers receiving them, Arapaho National Forest, Colorado 70
Figure 23. In a forest nursery a trough is often used for sowing seeds in drills. The seed scattered along the sides of the trough rattles into position at the bottom and is more even than when distributed by the ordinary worker at the bottom of the trough. Pike National Forest, Colorado 72
Figure 24. Uncle Sam grows the little trees by the millions. These will soon cover some of the bare hillsides on the National Forests of the West 72
Figure 25. One of the largest Forest Service nurseries where the young trees are given the utmost care before they are large and strong enough to endure the rigorous climate of the National Forests. McCloud Nursery, Shasta National Forest, California 76
Figure 26. A view of seed sowing with a corn planter. San Isabel National Forest, Colorado 78
Figure 27. Sowing seed along contour lines on the slopes. Pike National Forest, Colorado 78
Figure 28. A planting crew at work setting out small trees. The man ahead digs the hole, and the man behind plants the tree. Wasatch National Forest, Utah 82
Figure 29. At the Fort Valley Forest Experiment Station, Coconino National Forest, Arizona. A typical meteorological station. Forest officer measuring precipitation. Note the shelter which contains thermometers and also the electrically equipped instruments to record the direction and velocity of the wind 90
Figure 30. Forest officer ascertaining the amount of evaporation from a free water surface. Fort Valley Forest Experiment Station, Flagstaff, Arizona 90
Figure 31. Forest Ranger with his pack horses traveling over his district. Meadow Creek, foot of Mt. Wilson, Montezuma National Forest, Colorado 102
Figure 32. A plank of Incense cedar affected by a disease known as "pin rot." By cutting the cedar timber when it is mature this can be largely avoided. Lassen National Forest, California. Photo by the author 114
Figure 33. The western pine forests will some day be a great source for naval stores. By distilling the crude resin of the Jeffrey pine a light volatile oil--abietene--is secured which has great healing and curative properties. Lassen National Forest, California. Photo by the author 114
Figure 34. A forest fire lookout station at the summit of Mt. Eddy. Mt. Shasta in the background. California 124
Figure 35. A forest fire lookout station on the summit of Brokeoff Mountain, elevation 9,500 feet. Lassen National Forest, California. Photo by the author 128
Figure 36. Turner Mountain lookout station, Lassen National Forest, California. This is a 10 ft. by 10 ft. cabin with a stove and with folding bed, table, and chairs. The forest officer stationed here watches for forest fires day and night throughout the fire season. Photo by the author 128
Figure 37. A fire line cut through the low bush-like growth of "Chaparral" on the Angeles National Forest, California. This "Chaparral" is of great value for regulating stream flow. The streams are used for water power, domestic purposes, and for irrigating many of the largest lemon and orange groves of southern California 132
Figure 38. A forest officers' temporary camp while fighting forest fires. Near Oregon National Forest, Oregon 132
Figure 39. Putting out a ground fire. Even if the fire does not burn the standing timber, it kills the young trees and so weakens the larger ones that they are easily blown over. Wallowa National Forest, Oregon 136
Figure 40. Forest officers ready to leave a tool box for a forest fire in the vicinity. Such tool boxes as these are stationed at convenient places on National Forests ready for any emergency. Arapaho National Forest, Colorado 136
Figure 41. A forest fire on the Wasatch National Forest, Utah. Forest officers trying to stop a forest fire by cutting a fire line. Note the valuable growth of young trees which they are trying to save at the right 140
Figure 42. A forest fire running in dense underbrush on one of the National Forests in Oregon 144
Figure 43. Men in a dense forest with heavy undergrowth clearing away brush to stop the fire as it is running down hill. Crater National Forest, Oregon 144
Figure 44. Fire in a Lodgepole pine forest in Colorado. Arapaho National Forest, Colorado 148
Figure 45. A mountain fire in "Chaparral" five hours after it started. Pasadena, California 148
Figure 46. A few years ago this was a green, luxuriant forest. Picture taken after the great fires of August 20, 1910, on the Coeur d'Alene National Forest near Wallace, Idaho 152
Figure 47. The first evidence of insect attack are the reddish brown pitch tubes on the bark. Lodgepole pine infested by the mountain pine beetle. Lassen National Forest, California. Photo by the author 156
Figure 48. The last stage of an insect-attacked tree. The tree is dead and the dry bark is falling off. Lassen National Forest, California. Photo by the author 156
Figure 49. Wrecked farm buildings due to flood of May 21, 1901, Nolichucky River, near Erwin, Tenn. This is one result of denuding the Appalachian Mountains of their forest cover 162
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