Abstract
“THE course of instruction described in this book has been in use for some years at University College, Nottingham.” After a few instructions as to the use of apparatus, there follows a short course of experiments on oxygen, air, carbonic acid, water, and hydrogen. The third section treats experimentally of soils, manures, feeding materials, and dairy produce, and gives a number of simple experiments that serve to show many of the most important properties of these substances. For example, the differences between the sulphur present in gas-lime and in gypsum respectively, and the various conditions in which phosphoric acid occurs in superphosphates, bone phosphates, reverted phosphate, and slag phosphates are made the subjects of experiment, Tests are given for the various constituents of manures. Oilcakes, grass and hay, roots, flour, milk, butter and cheese, are dealt with in a similar manner. The fourth section of the volume gives a few reactions of a select number of metals (viz. seven) and acids, with a few other matters, and tables for the qualitative analysis of substances containing them. We would remark in reference to this, that to allow students to fuse insoluble substances in porcelain crucibles, in order to test for silica, is, to say the least of it, undesirable.
Practical Agricultural Chemistry for Elementary Students.
By J. Bernard Coleman Frank T. Addyman (London: Longmans, Green, and Co., 1893.)
Article PDF
Rights and permissions
About this article
Cite this article
J., C. Our Book Shelf. Nature 49, 244 (1894). https://doi.org/10.1038/049244a0
Issue Date:
DOI: https://doi.org/10.1038/049244a0