Publisher's Synopsis
Excerpt from Lectures on Plant Physiology: Authorized English Translation, With 172 Illustrations
A discussion of plant metabolism presupposes a knowledge of the chemical composition of the plant, and to this subject we must therefore first of all turn our attention.
Qualitative analysis discloses the existence in the plant body of a relatively small number of elements. Ignoring such as are found only in certain plants, such as are present only when artificially supplied, such as occur only in minute quantities, and which are obviously of no importance to the plant, there are left thirteen elements for consideration, viz. Hydrogen, oxygen, chlorine, sulphur, nitrogen, phosphorus, silicon, carbon, potassium, sodium, calcium, magnesium, and iron. The gain in scientific insight which such an analysis affords us is, however, very limited.
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