How crops grow : a treatise on the chemical composition, structure, and life of the plant, for agricultural students / by Samuel W. Johnson ; revised, with numerous additions, and adapted for English use by Arthur Herbert Church and William T. Thiselton Dyer.

Date:
1869
Catalogue details

Licence: Public Domain Mark

Credit: How crops grow : a treatise on the chemical composition, structure, and life of the plant, for agricultural students / by Samuel W. Johnson ; revised, with numerous additions, and adapted for English use by Arthur Herbert Church and William T. Thiselton Dyer. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    closed the very seat of those chemical actions on which the growth of the plant depends, and by which its dis- tinctive products are elaborated. • The author of this work has endeavoured to lay out a groundwork of facts sufficiently complete to reflect a true and well-proportioned image of the nature and needs of the plant, and to serve the student of agriculture for thoroughly preparing himself to comprehend the whole subject^of vegetable nutrition, and to estimate accurately how and to what extent the Crop depends upon the atmosphere on the one hand, and the soil on the other, for the elements of its growth. The Chemistry of Plant-life is here treated with very considerable fulness. Numerous results of investigations and detailed Tables of Analyses are given, in order that all the more important data whence the conclusions of the scientific agriculturist must be drawn, may be before the student. The laborious researches of many English and continental chemists have been freely quoted; the results recently obtained by German experimenters having furnished more particularly the substance of several im- portant chapters. The experiments at the agricultural stations of the Continent have led to such valuable dis- coveries, that it is to be regretted that so little regular work of the same kind is carried on in Great Britain. With the exception of the few farmers who carry on careful experiments for the Highland and Agricultural Society, and for local Societies; of Messrs. Lawes and Gilbert whose elaborate and extensive researches are beyond all praise; and of the Royal Agricultural College of Cirencester, the officials of which have tried syste- matic experiments in agricultural chemistry for twenty vears we have little work of the kind we are now speaking of goin- on in this country. Agricultural education is,