. Bulletin (Pennsylvania Department of Forests and Waters), no. 35. Forests and forestry. The forest cover prevents the paekin«»' an 1 erosion of soil, and also retards the surface run-oft' of rain and melted snow. It changes rainfall, snow, and other precii)itation from surface run-off to under ^n-ound flow, thus regulating the flow and purity of water in springs and streams. It helps to lessen the frequency of floods and to lower the flood stages of streams. The forest provides recreation and health. It furnishes favorable conditions for game and fish, and for the sport of hunting and fishin
. Bulletin (Pennsylvania Department of Forests and Waters), no. 35. Forests and forestry. The forest cover prevents the paekin«»' an 1 erosion of soil, and also retards the surface run-oft' of rain and melted snow. It changes rainfall, snow, and other precii)itation from surface run-off to under ^n-ound flow, thus regulating the flow and purity of water in springs and streams. It helps to lessen the frequency of floods and to lower the flood stages of streams. The forest provides recreation and health. It furnishes favorable conditions for game and fish, and for the sport of hunting and fishing. It supplies the factors which make a beautiful and healthful country. It reduces the extremes of temperature in both summer and winter. In fact, it furnishes food, water, clothes, labor, recreation, health, Avealth. An old Gennan ])roverb has it: "The care of the forest brings all ; Certainly for Pennsylvania, forest prott^ction, regulation, and wise use mean continntHl i)rosperity. Forest destruction means economic suicide. This has been demon- strated in numerous instances in Pennsylvania. ]\Iany conuuunities, which were i)rosperous as long as lumbering was going on, all but disappeared shortly after lumbering ceased. Other industries, which are dependent upon forest products for their raw material, have had to move to other states. AVorkei-s and their families nuist go where there is a demand for their hire. Farms have had to be abandoned because of the loss of nearby markets. The community becomes de- populated and chui'ch, school, and tax problems develop for the few people who remain. FOUR AVHAT FOREST FIRE DOES The factors determining the extent of damage done by forest fire are general, oi- climatic, conditions and local conditions. Climatic conditions. The aitiount of damage done by fire in the forest depends to a great extent upon the season of the year in which it occurs. It has been found that the living parts of trees are most .sens
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