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Page 49 - Specific Gravity. The ratio of the weight of a given volume of any substance to the weight of an equal volume of distilled water, and is found by dividing the first weight by the second.
Page 2 - a systematic arrangement of the most appropriate methods of harvesting, converting and disposing profitably of forest produce in accordance with the results of experience and study," and the scope of the work may be gathered from the terms of this definition.
Page 128 - A slight waviness of fibre is very common and affects the quality of the wood but slightly.
Page 53 - There is a close relation between a tree's demands upon temperature and its demands upon soil. Given the proper temperature, it will grow where the soil is unfriendly ; and given the most congenial soil, it will grow where the temperature is not ideal. The colder and wetter the soil, the : better will it grow with a relatively high temperature ; the drier and warmer the soil, the better will it grow with a relatively low temperature. Thus, on a northern slope the forester will often find it safe...
Page 101 - Blandy in a paper read before the American Institute of Mining Engineers, and published in the Transactions of that society, to which source the reader is ref erred for particulars.* Mr.
Page 698 - ... sense, and the strictly tangential part of the section must be sought for ; also the thicker the stem the better this section may be. The cross-section must include wood, cambium and bast, and similarly with the radial longitudinal section. Tangential longitudinal sections must be taken from at least two parts, one in the wood and the other in the bast. In the preparation of these sections the quality and condition of the razor becomes of prime importance. If it be at all blunt the inner thickening...
Page 106 - Hence one kilogram of wood or charcoal will raise the temperature of 3,620 or 8,080 litres of water by 1° C.
Page 638 - Schwarzwald. [In order to be independent of the natural movement of the sap, H.
Page 533 - The inner covering is laid on commencing from above, and should be thick enough to prevent the earth of the outer covering from falling through.