things worth paying attention to
Read free. “This volume has been written primarily as a text for secondary schools of agriculture, and for colleges where only a general course can be offered. Claim is not made for much new material concerning the subjects discussed; but rather an attempt has been made to place under one cover a general discussion of agricultural engineering subjects, which hitherto could not be secured except in several volumes and hence impractical for text-book purposes.”
Read free. “If one compares any two plants of the same kind ever so closely, it will be found that they differ from each other. The difference is apparent in size, form, color, mode of branching, number of leaves, number of flowers, vigor, season of maturity, and the like; or, in other words, all plants and animals vary from an assumed or standard type. If one compares any two branches or twigs on a tree, it will be found that they differ in size, age, form, vigor, and in other ways.”
Database of 8,000+ plants, with extensive search filtering.
Read free. “This book is designed to enable the amateur plant hunter to make accurate and certain identifications of edible plants. The 85 plants that are covered were selected because they can be easily recognized, can supply a wide range of food products throughout the year (although the pickings are necessarily somewhat leaner in the winter months), and can be found over broad sections of the U.S. and southern Canada. These 85 plants alone provide 28 different salad greens, 18 cooked vegetables, 8 substitutes for potatoes, 18 sources of flour, 5 cooking oils and butters, 21 cold beverages, 23 substitutes for coffee and tea, and 7 sources of sugar as well as numerous potherbs, fruits, confections, jams and jellies, pies, vinegars, and even salt.”
Read free. Farmers of Forty Centuries; or, Permanent Agriculture in China, Korea, and Japan is an early 20th-century work by American agronomist F.H. King. It documents his 1909 journey through East Asia, where he studied how densely populated nations managed to sustain agricultural fertility for over 4,000 years.
