The older wood, nearer the centre, stops its physiological functions as the trunk increases in diameter. The cells that are living, the dampness content frequently decreases and quite often dark-coloured substances are now being deposited. This is actually the heartwood that is not the same as the sapwood. The normal color associated with lumber of the particular tree types could possibly be really adjustable, not merely between a few specimens of the identical types, but also within one stem. Wood…