The Manures Most Advantageously Applicable to the Various Sorts of Soils: And the Causes of Their Beneficial Effect in Each Particular Instance

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Vernor and Hood, 1802 - 93 oldal

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36. oldal - D2 the the fixed air combined with the earths, arid alfo by that which is conftantly fet loofe byvarious procefles, and foon precipitates by the fuperiority of its fpecific gravity, and is then condenfed in, or mechanically abforbed by foils, or contained in dew. Lands which contain iron in a femicalcined...
1. oldal - What are the Manures Most Advantageously Applicable to the Various Sorts of Soils, and What are the Causes of their Beneficial Effect in Each Particular Instance'.
46. oldal - Senebier -j~ : he firft difcovered that frefh leaves, expofed to the fun, in fpring-water, or in water flightly impregnated with fixed air, always produce pure air, as -long as this impregnation lafts ; but, as foon as it is exhaufted, or if the leaves be placed in water out of which this air has been expelled by boiling, they no longer afford pure air ; whence he infers, that fixed air is decompofecl, its carbonic principle retained by the plant, and its pure air expelled.
38. oldal - ... many other agricultural phenomena, too tedious to relate : but I muft not omit that the phofphoric acid is found in coal ; and this enters into the compofition of many vegetables.
92. oldal - ... fuited to detain, or exhale, the due proportion of the average quantity of moijlure that falls in each particular country. On this relation or adaptation we have feen that the fertility of each...
34. oldal - ... of air has been prevented, but alfo of all putrid 'vegetable and animal bodies : hence it is found in vegetable and animal manures that have undergone putrefaction, and is the true bafis of their ameliorating powers...
84. oldal - Soil. This foil wants both the argillaceous and the ftony, fandy, or gravelly ingredients ; therefore the beft manure for it is clayey loam, or fandy loam * ; but when the chalk is fo hard, as it frequently is in England, and fo difficultly reducible to impalpable powder as to keep of itfelf the foil fufficiently open, then...
71. oldal - Ib.— 2 ozSt 157! grs. reduce it to powder : boil fcoil it in four times its weight of diftilled water for half an hour ; when cool, pour it off, firft into a coarfe linen nitre to catch the fibrous particles of roots, and then through paper, to catch the finer clayey particles diffufed through it : fet by the clear water, add what remains on the filtre to the boiled mafs : if it be infipid, as I fuppofe it to be, then weigh the fibrous matter, and call it the fibrous fupplement = F. Suppofe it...
26. oldal - From whence we may deduce, firft, that graflcs and corn, during the time of their growth, abforb about one-half their weight of water each day, if the weather be favourable. Secondly, that the water they thus pafs, nourifhes them merely as water, without taking any foreign fubftance into the account ; for, 3000 grains of...
13. oldal - It effervefces with all acids. It confifts of from 33 to 80 per cent, of mild calx, and from 66 to 20 per cent. of clay. To find its...

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