Instructions for the Analysis of Soils, Limestones, and ManuresS. B. Shaw, 1856 - 101 páginas |
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Términos y frases comunes
acetic acid acid solution added adulterated alkalies alumina ammonia in excess ammoniacal salts analysis ascertain baryta boiling burned carbonate of lime carbonate of soda carbonic acid caustic ammonia caustic potash clay collected colour common salt determined dilute muriatic acid distilled water drops estimated evaporated to dryness examination Fahr filtered solution flask gentle heat grains of chloride gypsum heated to redness humic acid humic and ulmic insoluble in muriatic insoluble matter lime and magnesia limestone liquid manganese manure method mixed molybdate of ammonia nitrate of silver nitrate of soda nitric acid organic matter oxalate of ammonia oxide of iron per-manganate peroxide of iron phosphate of lime phosphate of magnesia phosphoric acid potash and soda poured powder proportion protoxide of iron pure residue sal-ammoniac sand separated silica solu solution contains substances sulphate of magnesia sulphate of soda sulphuric acid thrown tion treated with water ulmic acids washed weighed portion whole
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Página 10 - The weight of the soil, divided by the difference between the weight of the bottle with soil and water and the sum of the weights of the soil and the bottle of water together, gives the specific gravity. Thus, let the bottle with water weigh 2000 grains, and with water and soil 2600, thenGrains.
Página 25 - ... gives a pure white gelatinous precipitate, it indicates the presence of alumina, or magnesia, or both. In this case, hydrochloric acid must be added, until the precipitate is re-dissolved, and the solution rendered distinctly acid. If, on the addition of ammonia, the precipitate reappears undiminished in quantity, it contains alumina only ; if it be distinctly less in quantity, we may infer the presence of both magnesia and alumina ; but if no precipitate now appears, it contains magnesia only....
Página 10 - ... the smell of chlorine, which is easily recognized. g. Determination of the Density of a Soil. Dry a sample of the soil (from which the large stones have been picked out) at 212° in the water oven till it ceases to lose weight.
Página 7 - The benefits to be derived from the chemical examination and analsyis of the soil, are by many misunderstood. Some have represented it as the only sure guide to successful cultivation; while others have not scrupled to pronounce the analysis of the soils to be entirely useless and unfitted to lead to any profitable practical result; both of these extreme parties are in error. For while it is often very difficult from an analysis alone to explain either the past agricultural history, the present money...
Página 11 - Weigh an exact imperial half-pint of the soil in any state of dryness. When this weight is multiplied by 150, it will give very nearly the weight of a cubic foot of the soil in that state. 2. Chemical Analysis.
Página 13 - ... open them upon a linen cloth to remove the drops of water adhering to the paper. The outside filter is now placed in one pan of the balance, and the inner one containing the soil on the other ; and the whole being carefully balanced, the true weight of the wet soil is obtained : suppose this to be 1400, then the soil is capable of holding 40 per cent, of water. (e.) Rapidity of drying. — Expose the...
Página 10 - ... the specific gravity. Thus, let the bottle with water weigh 2000 grains, and with water and soil 2600, then — Grains.
Página 8 - ... extreme parties are in error. For while it is often very difficult from an analysis alone to explain either the past agricultural history, the present money * value, or how best to remedy the known defects of...