Elements of agricultural chemistry and geology / [Jas. F.W. Johnston].

  • James Finlay Weir Johnston
Date:
1844
Catalogue details

Licence: Public Domain Mark

Credit: Elements of agricultural chemistry and geology / [Jas. F.W. Johnston]. Source: Wellcome Collection.

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    ADVERTISEMENT TO THE THIRD EDITION. The rapid sale of two editions of this little book have induced me to take some pains in improving the present edition. I have extended it fi’om ten chapters to twelve, adding an entirely new chapter upon Milk and its products. I have besides en- larged the previous chapters with many new sections, and with new practical illustrations, drawn in part from recent researches in the laboratory, and in part from the results of those experiments in the field which, within the last two years, have been so mucli more extensively made, and with so much greater accuracy, than at any former period. Notwithstanding these numerous adchtions, my Publishers have been able, by a slight alteration in the type, to make a considerable reduction in the ])rice of this edition,—a circumstance which, I trust, will aid in promoting what I cliiefly desire—tlie diffu- sion of sound tliough elementary scientific knowledge
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