...that the cultivated plants abstract from the soil unequal quantities of certain nutritious matters. A fertile soil must contain in sufficient quantity,...prepared for culture, contains a certain amount of these ingredients, and also of ammoniacal salts and decaying vegetable matter. The system of rotation adopted...

...from various parts of Liebig's works some sentences which will put this in a clear point of view. " A fertile soil must contain in sufficient quantity,...materials indispensable for the growth of plants. It is obvious, for instance, that we furnish the conditions essential to the formation of starch or...

...flow out into the sea by the Thames and other rivers. A field properly prepared for culture ought to contain in sufficient quantity, and in a form adapted for assimilation, all the inorganic materials required by plants. It must also contain a certain amount of ammoniacal salts and decaying vegetable...

...that the cultivated plants abstract from the soil unequal quantities of certain nutritious matters. " A fertile soil must contain in sufficient quantity,...prepared for culture, contains a certain amount of these ingredients, and also of ammoniacal salts and decaying vegetable matter. The system of rotation adopted...

...whole series of instructive experiments. I quote from the 4th English edition : — P. 169, it is said: "A fertile soil must contain in sufficient quantity,...materials indispensable for the growth of plants." P. 211. "Ammonia accelerates and favours the growth of plants in all kinds of soils, in which exist...

...stimulant, its action, in this case, is followed by a corresponding exhaustion." —lb., p. 106 (1855). " A fertile soil must contain in sufficient quantity,...prepared for culture contains a certain amount of these ingredients, and also of ammoniacal salts and decaying vegetable matter."-— Fourth edition, p. 169....

...plants, when the ammonia required for their development will be furnished by the atmosphere. Fourth edition, p. 212 (213). "A fertile soil must contain...prepared for culture contains a certain amount of these ingredients, and also of ammoniacal salts, and decaying vegetable matter." Fourth edition, p. 169....

...sufficient quantity, and in a " form adapted for assimilation, all the inorganic materials indis" pensable for the growth of plants. " A field artificially prepared for culture contains a certain " amount of these ingredients, and also of ammohiacal salts and u decaying vegetable matter. The system of rotation adopted...

...the cultivated plants abstract from the soil unequal " quantities of certain nutritious matters. " A fertile soil must contain in sufficient quantity,...adapted for assimilation, all the inorganic materials indis" pensable for the growth of plants. " A field artificially prepared for culture contains a certain...

...particular plant intended to be grown upon it. ' A fertile soil must contain in sufficient quantities, and in a form adapted for assimilation, all the inorganic materials indispensable for the growth of plants ' (Liebig). But different kinds of plants take up in different proportions the various inorganic constituents...