By J. J. H. Gregory. Mr. Gregory is one of those members of the seed trade of whom the profession may be proud. He is not only a gentleman who has been eminently successful as a business man, but is well known in the walks of science, and to those who take a pleasure in general intelligence in its broadest sense. This combination of science and practice is by no means common, especially among bookmakers ; and this fact renders this treatise on fertilizers the more valuable. It is a paper-covered, small octavo pamphlet, of 116 pages - paper-covered, we presume, in order that it might be sold cheap and widely circulated, and thus do the more good. Yet one cannot but regret that a book so intrinsically valuable should not have been thought worthy of binding and putting in regular library shape. Paper-covered - pamphlet-like - books are rarely preserved for any length of time. In this Mr. Gregory tells how to compound formulas for artificial manures - where the materials come from, and where to get them in the cheapest form.