. British husbandry; exhibiting the farming practice in various parts of the United Kingdom. Agriculture -- Great Britain; cbk. The wood of the laburnum (9) is distinguished by its minute, regular, uninterrupted medullary rays, and by the broken beaded longitudinal lines of the tubular structure. These characters of distinction being permanent and constant in all these different kinds of wood, will be found useful in cases where it is desirable to ascertain the kind of timber which may have continued sound for the longest period in any particular building or situation, and the contrary where i
. British husbandry; exhibiting the farming practice in various parts of the United Kingdom. Agriculture -- Great Britain; cbk. The wood of the laburnum (9) is distinguished by its minute, regular, uninterrupted medullary rays, and by the broken beaded longitudinal lines of the tubular structure. These characters of distinction being permanent and constant in all these different kinds of wood, will be found useful in cases where it is desirable to ascertain the kind of timber which may have continued sound for the longest period in any particular building or situation, and the contrary where its duration has been limited *. The leaves constitute one of the most important conservative organs of vegetable growth ; for on the free and healthy exercise of their functions depend the life of the plant and its progress to maturity, to say nothing of that universal interest and pleasure which is afforded by the diversified beauty of their forms and tints. The green colour of the leaves of trees has been proved, beyond all doubt, to depend chiefly on the influence of solar light and atmospheric air. Almost every distinct species and variety of plant, in its most healthy state, has its own peculiar shade of green : the yellow-green tint of the foliage of a healthy larch, would in that of a pine, spruce, fir, and cedar of Lebanon, be certain indications of disease and decay. The dissection of a leaf shews that it is composed of vessels, cellular tissue, and an epidermis. The green part of a leaf is, in fact, a contiruiation of the parenchyma of the bark before mentioned ; and the mid- rib and nerves of the leaf are a continuation of the conducting and returning sap, and air vessels of tiie bark and alburnum. The under and upper surfaces of the leaf may be separated in an entire state from each other. These appear to perform different offices ; the under surface is provided " It would be of the greatest utility to the interests of i)liiiitinLV were registers kept of the ki
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Keywords: ., bookcentury1800, bookdecade1840, bookpublisherlon, booksubjectcbk
