Elements of Agricultural Chemistry

No department of agricultural chemistry is surrounded with greater difficulties and uncertainties than that relating to the properties of the soil. When chemistry began to be ap...

When the water naturally existing in plants is expelled by exposure to the air or a gentle heat, the residual dry matter is found to be composed of a considerable number of diff...

In the preceding chapter, a general manure has been defined as one containing all the constituents of the crop to which it is to be applied, in a state fitted for assimilation....

Mineral manure is a term which is now used with great laxity. In its strict sense, it means manures which contain only, and owe their exclusive value to the presence of, those s...

The feeding of cattle, once a subordinate part of the operations of the farm, has now become one of its most important departments, and a large number of minute and elaborate ex...

When treating of the general constituents of plants, it has been already stated that the older chemists and vegetable physiologists, misled by the small quantity of ash found in...

Manures of animal origin are generally characterized by the large quantity of nitrogen they contain, which causes them to undergo decomposition with great rapidity, and to yield...

Comparatively few uncultivated soils possess the physical properties or chemical composition required for the production of the most abundant crops. Either one or more of the su...

In their natural condition all soils not absolutely barren are capable of supporting a certain amount of vegetation, and they continue to do so for an unlimited period, because...

The substances absorbed by the plant, which are of simple composition, and contain only two elements, are elaborated within it, and converted into the many complicated compounds...

BALFOUR (Professor). A Manual of Botany: being an Introduction to the Study of the Structure, Physiology, and Classification of Plants. Crown 8vo, pp. 700, with 820 Illustration...

The determination of the value of a manure is in many respects a commercial rather than a chemical question, but as it must be founded on the analysis, and presents some peculia...

Reference has already been more than once made to the fact that a crop growing in any soil must necessarily exhaust it to a greater or less extent by withdrawing from it a certa...

The simple compounds which the plant absorbs from the atmosphere and soil are elaborated within its system, and converted into the various complex substances of which its tissue...

Many vegetable substances have been employed as manures, either alone or as auxiliaries to farm-yard manure. Like that substance, they are general manures, and contain all the c...

The Principles of Feeding ... The Composition of different Animals in different stages of Fattening ... The Composition of the Food of Animals ... Milk ... The Principal Varieti...

by himself; but in order to render this Edition complete, a SUPPLEMENTARY VOLUME (XV.) will be added, containing the Biographies of SHAKSPEARE, POPE, GOETHE, and SCHILLER, contr...

Mineral Manures ... Sulphate and Muriate of Ammonia ... Sulphomuriate of Ammonia ... Ammoniacal Liquor ... Nitrates of Potash and Soda ... Muriate and Sulphate of Potash ... Chl...

The Amount of Inorganic Matters in Different Plants ... The Relative Proportions of Ash in the Different Parts of Plants ... Influence of the Nature of the Soil on the Proportio...

The Origin of Soils ... Composition of Crystalline and Sedimentary Rocks ... their Disintegration ... Chemical Composition of the Soil ... Fertile and Barren Soils ... Mechanica...

The Saccharine and Amylaceous Constituents ... Cellulose ... Incrusting Matter ... Starch ... Lichen Starch ... Inuline ... Gum ... Dextrine ... Sugar ... Mucilage ... Pectine a...

Fundamental Principles upon which Manures are applied ... _Special_ and _General_ Manures ... Importance of this distinction ... Views regarding the Theory of Manures ... Remark...

Guano, different varieties of ... Average composition of ... Division into Ammoniacal and Phosphatic ... Characters of ... Adulteration of ... Application of ... Pigeons' Dung ....

Farm-yard Manure ... Urine ... Composition of ... Dung ... Composition of ... Farm-yard Manure ... Composition of ... Management of Dung-Heaps ... Box-feeding ... Fermentation a...

Rape-Dust, Mustard, Cotton and Castor Cake ... Composition of various Oil-Cakes ... Malt-Dust, Bran, Chaff, etc. ... Straw and Saw-dust ... Manuring with Fresh Vegetable Matter...

Carbon ... Carbonic Acid ... Hydrogen ... Nitrogen ... Nitric Acid ... Ammonia ... Oxygen ... Sources whence obtained ... The Atmosphere ... The Soil ... Source of the Inorganic...