The first book of lessons in chemistry, in its application to agricultureSimms and M'Intyre, 1848 - 170 páginas |
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Términos y frases comunes
afford agricultural alkalies Alumina ammonia amount animal Antrim applied atmosphere Belfast boiling bones bottle burned capable carbonate of lime carbonic acid cent charcoal chemical chemist chemistry clay coast colour composed composition compound considerable consists contain converted covered crops cultivated decay decomposing decomposition described diastase dissolved dung earth effects employed England excrements exist farm-yard farmer fertilizing fibre fields gases gluten grain granite growth guano gypsum heat hydrogen ingredients inorganic insoluble Ireland iron limestone liquid Magnesia manure manure heap marl materials mineral matters mixed mixture moisture nitrogen organic matter Oxide oxygen peat Phosphate phosphate of lime phosphoric acid plants portion possess potash pounds procured produced proportions quantity quicklime rain rendered require rocks roots sal ammoniac saline matters salt seeds silica soda soil starch straw substances sulphate sulphuric acid supply surface termed tube turnips urine usually valuable vegetable matter vessel vitriol wheat
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Página 79 - In my collection, which includes, I believe, nearly the perfect Flora, there are twenty species, without reckoning a moss, lichen, and fungus. To this number two trees must be added ; one of which was not in flower, and the other I only heard of. The latter is a solitary tree of its kind, and grows near the beach, where, without doubt, the one seed was thrown up by the waves.
Página 79 - One of these grows to a very large size, but, from the extreme softness of its wood, is useless ; another sort affords excellent timber for shipbuilding. Besides the trees, the number of plants is exceedingly limited, and consists of insignificant weeds. In my collection, which includes, T believe, nearly the perfect flora, there are twenty species, without reckoning a moss, lichen, and fungus.
Página 137 - In a few seconds, the free acids unite with the bases contained in the earth, and a neutral salt is formed in a very fine state of division.
Página 137 - The most easy and practical mode of effecting their division is to pour over the bones, in a state of fine powder, half of their weight of sulphuric acid diluted with three or four parts of water...
Página 93 - ... we suppose all the conditions for the absorption of carbonic acid present, a young plant will increase in mass, in a limited time, only in proportion to its absorbing surface ; but if we create in the soil a new source of' carbonic acid, by decaying vegetable substances, and the roots absorb in the same time three times as much carbonic acid from the soil as the leaves derive from the atmosphere, the plant will increase in weight fourfold. This fourfold increase extends to the leaves, buds, stalks,...
Página 108 - When freed from water, 1,000 parts left, of ash, 182; and this yielded — carbonate of soda, 8 ; sulphate of soda, with a little sulphate of potash and phosphate of soda, 8 ; phosphate of lime and magnesia, and a trace of gypsum, 100; silica, 16. Human...
Página 80 - I do not iuclude in the above list the sugar-cane, bannana, some other vegetables, fruit trees and imported grasses. As these islands consist entirely of coral, and at one time, probably, existed as a mere water-washed reef, all the productions now living here must have been transported by the waves of the sea.
Página 113 - That which is nearest the city brings the higher rent, chiefly because it is near, and more accessible to the points where the grass is consumed, but also partly from the better natural quality of the land. The average value of the land, irrespective of the sewer water application, may be taken at 3?.
Página 163 - Phys., third series, iii., p. 92.) It is applied to the clay soils and to marshy grass lands with much advantage, and is carried far inland for this purpose. It is there called trez, and is laid on the land at the rate of 10 to 15 tons per acre. On the southern coasts of France, where shell sand is met with, it is known by the name of tanyue or tan/^ue.
Página 165 - ... 1. Does plaster act favorably on artificial meadows? Forty-three answers, of which forty affirmative. "2. Does it act favorably on artificial meadows the soil of which is very damp? Ten answers, all no. "3. Will it supply the place of organic manure, or will a barren soil be converted into a fertile one by use of it? Seven answers, all no. " 4. Does gypsum sensibly increase the crops of cereals ? Thirty- two answers, thirty negative.