. Essentials of biology presented in problems. Biology. 140 OUR FORESTS smaller trees are injured. There is great waste in the mills. In fact, man wastes in every step from the forest to the finished product. ByJ^iix^^- Indirectly, man is responsible for fire, one of the great- est enemies of the forest. Most of the great forest firfes of recent years, the losses from which total in the hundreds of millions, have been due either to railroads or to carelessness in setting fires in the woods. It is estimated that in forest lands traversed by railroads from 25 per cent to 90 per cent of the fires
. Essentials of biology presented in problems. Biology. 140 OUR FORESTS smaller trees are injured. There is great waste in the mills. In fact, man wastes in every step from the forest to the finished product. ByJ^iix^^- Indirectly, man is responsible for fire, one of the great- est enemies of the forest. Most of the great forest firfes of recent years, the losses from which total in the hundreds of millions, have been due either to railroads or to carelessness in setting fires in the woods. It is estimated that in forest lands traversed by railroads from 25 per cent to 90 per cent of the fires are caused by coal- burning locomotives. For this reason laws have been made in New York state requiring locomotives passing through the Adirondack forest preserve to burn oil instead of coal. This has resulted in a considerable reduction in the number of fires. In addition to the loss in timber, the fires often burn out the organic matter in the soil (the "duff") forming the forest floor, thus pre- venting the growth of forest there for many j-ears to come. In New York and other states fires are fought by an organized corps of fire wardens, whose duty it is to watch the forest and to fight forest fires. Other Enemies. — Other enemies of the forest are nimierous fungojis plants of which we will learn more later, insect parasites,. Our birds help protect our forests. This tree has been attacked by boring insects, but woodpeckers have dug them out and killed Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hunter, George William, 1873-1948. New York, Cincinnati [etc. ] American Book Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbiology, bookyear1911
