British Farmer's Magazine, Volumen4James Ridgway, 1840 |
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abeawt acid acre Adjudged advantage agriculturists alumina ammonia animal applied attention aw wur barley bred breed bushels carbonate carbonic acid cattle chalk classes clay clover compost considerable corn crop cultivation disease districts ditto draining drill dung earth effect England English Agricultural Society exhibited experiments farm farm-yard farmer feeding fertility field give gorse grain grass ground horses improvement inches increase labour land lime Lord manure matter means meeting miles mode months old nature night soil nitrate of soda oats observed peat plants portion potatoes practical present Prize produce quantity rendered result roots Royal Agricultural Society salt saltpetre sand Scotland season seed shearling sheep siliceous sovereigns sowing sown straw subsoil subsoil plough substances supply tion tons trees turnips vegetable weight wheat wurzel yard Yorkshire
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Página 72 - By David Low, Esq., FRSE, Professor of Agriculture in the University of Edinburgh, etc.; author of "Elements of Practical Agriculture, "etc.
Página 236 - The loss of weight in the process should be carefully noted, and when in four hundred grains of soil it reaches as high as 50, the soil may be considered as in the greatest degree absorbent, and retentive of water, and will generally be found to contain much vegetable or animal matter, or a large proportion of aluminous earth. When the loss is only from 2O to 10, the land may be considered as only slightly absorbent and retentive, and siliceous earth probably forms the greatest part of it.
Página 134 - ... the soil amongst the roots of some grass in the border of a garden; in less than a week a very distinct effect was produced on the grass; upon the spot exposed to the influence of the matter disrngaged in fermentation, it grew with much more luxuriance than the grass in any other part of the garden.
Página 61 - All seeds will not equally produce vigorous seedlings : but the healthiness of the new plant will correspond with that of the seed from which it sprang. For this reason, it is not sufficient to sow a seed to obtain a given plant: but, in all cases where any importance is attached to the result, the plumpest and heaviest seeds should be selected, if the greatest vigour is required in the seedling ; and feeble or less perfectly formed seeds, when it is desirable to check natural luxuriance.
Página 493 - From the foregoing remarks it will appear that the evils of the present system are entirely attributable to the use of locomotive power, and the remedy must be sought for in the employment of stationary power in its stead...
Página 384 - Carbonic acid, water, and ammonia, contain the elements necessary for the support of animals and vegetables. The same substances are the ultimate products of the chemical processes of decay and putrefaction. All the innumerable products of vitality resume, after death, the original form from which they sprung. And thus death, - — the complete dissolution of an existing generation, — becomes the source of life for a new one.
Página 236 - Soils, though as dry as they can be made by continued exposure to air, in all cases still contain a considerable quantity of water, which adheres with great obstinacy to the earths and animal and vegetable matter, and can only be driven off from them by a considerable degree of heat. The first process of analysis is, to free the given weight of soil from as much of this water as possible without in other respects affecting its composition ; and this may be done by heating it for ten or twelve minutes...
Página 394 - I considered that a plough might be constructed so as to loosen the soil to the depth of eighteen inches, keeping the best soil to the depth of four inches, and near the surface, thus admitting air and moisture to the roots of the plants, and enabling them to extend their spongioles in search of food, — for air, moisture, and extent of pasture, are as necessary to the thriving and increase of vegetables, as of animals. In this attempt I succeeded, as the result will show. I have now broken up all...
Página 240 - ... combination as muriates. The silica, after the usual process of lixiviation, must be heated red ; the other substances may be separated in the same manner as from the muriatic and sulphuric solutions. This process is the one usually employed by chemical philosophers for the analysis of stones. 8. If any saline matter, or soluble vegetable or animal matter, is suspected in the soil, it will be found in the water of lixiviation used for separating the sand.
Página 394 - ... years), without tenants ; the gorse, heather, and fern shooting up in all parts. In short, the land was in such a condition, that the crops returned not the seed sown. The soil was a loose, loamy soil, and had been broken up by the plough to a depth not exceeding; four inches, beneath which was a substratum (provincially called an...