for some purposes. They tend to cause abundant and needed rainfall and to preserve the moisture when fallen, releasing it to the rivers gradually, and thus preventing abnormal freshets and extreme droughts. Study the shape and arrangement of the different kinds of trees as shown in outline against the sky; best, perhaps, when the leaves are off. 693, notice, therefore, the weight, colour, hardness, density, and characteristic odour of the specimens ; the proportion of heart to sapwood, and the colour of each; the size and condition of the pith; the character of the grain, whether coarse or fine, close or open. The leaves of a tree are always giving off moisture; and this constant evaporation cools the surrounding atmosphere. Hunt up all the woody stems you can, compare the bark of the different specimens, noting its colour, taste, odour, surface, thickness, and the different ways it cracks and is cast off; and notice how easily you can learn to tell the common trees. Wikimedia.org, further, forests on hill sides do much to prevent destructive floods. It is widely used in the meteorological department to forecast the weather position of the. In this connection, a collection of leaves will also be interesting to make. You will find many things to notice in some woods. It may be well to bear in mind, considering the great variety of purposes for which the amateur uses wood, the distinction between the elasticity needed for such purposes as a bow or horizontal bar, and the toughness required for the ribs of a canoe.
It may be remarked, incidentally, that beginning with soft woods, such as white pine, calls for even keener-edged tools than can be got along with for harder woods, like oak. It is really a wonderful gift of modern science. One of the most serious aspects of the matter, however, is in regard to the washing away of the soil, which owes not merely its origin but its preservation to the forest and impact of internet on society research paper other vegetable growths. If you cannot get such large pieces of even the common woods, a collection of small flat blocks will be well worth making. But when the hills are covered with forests, the trees and the spongy soil they create absorb a large part of water, and allow the rest to flow down to the plains quietly and without any destructive effects. How to save forests? The slight neglect or unscientific working can rapidly deplete and may even annihilate it after which reforesting of the area may not be economically feasible. Forests command great influence on the climate, soil, and environment of our world. This is not mere theory. Hence, no programme of checking deforestation can be successful without a corresponding programme of population control. Computer -A wonderful gift OF science. Besides the woods in general use there are many which have merely a local value where they grow, and a long list could be made of the woods which have but very limited uses, as well as of those which, from their scarcity, hardness, small.
Essay on Deforestation for Children and Students
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