Rudimentary Treatise on Clay Lands and Loamy Soils: Containing the Origin and Chemical Qualities of Each Variety of Land. Natural Properties of the Soils and Mode of Cultivation. Cropping and Value of the Lands, and Changes Effected by Mixing with Hot LimeJ. Weale, 1852 - 140 páginas |
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Rudimentary Treatise on Clay Lands and Loamy Soils John Donaldson, Int Sin vista previa disponible - 2015 |
Términos y frases comunes
1st year 2nd 4th year 5th acid acre action agency alluvial alluvium alum alumina aluminum animals argillaceous Barley beans beds bodies bushel calcareous caloric Catstail chalk clay lands clunch coal Cocksfoot colour constitute contains cultivation decomposed decomposition deposits diluvial draining drills dung and lime earth East Lothian farm-yard dung favourable felspar formation of clay fresh-water furrow gault gault clay globe gravel green sand ground hardened harrowed heat humus ingredients iron Kimmeridge Kimmeridge clay lias limestone loams loamy London clay manure marine mass materials matter mixed mixture moisture nature Oats old red sandstone oolite organic remains oxide oxygen particles Pasture plants plastic clay produced quantity Ray grass Red clover rocks rotation sandstone sandy schist seeds shale soil sown strata stratified stratum substances sulphuric summer fallowing surface texture tion turnips upper vegetable vetches viscous Wheat White clover wholly دو وو
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Página 35 - This limestone is particularly characterised by its dull earthy aspect, and large conchoidal fracture ; in colour it varies in different beds from light slate blue, or smoke grey, to white : the former varieties usually constituting the upper ; the latter, the lower portions of the formation. The blue lias, which contains much iron, affords a strong lime, distinguished by its property of setting under water ; the white lias takes a high polish, and may readily be employed for the purposes of lithography.
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Página 139 - ... vegetation has consumed, and to be kept free from the weeds which naturally spring up in all fertile soils. All attempts to improve the nature of a soil should have for their object the bringing it to a state of loam, by the addition of those substances which are deficient. If there is too much clay, chalk and sand may be added, or a portion of the clay may be calcined by burning, in order to destroy its attraction for water, and thus act the part of sand in forming the loam. Limestone or calcareous...