This section is from the book "The Wonder Book Of Knowledge", by Henry Chase. Also available from Amazon: Wonder Book of Knowledge.
The original of all the varieties of the cultivated apple is the wild crab, which is a small and extremely sour fruit, and is native of most of the countries of Europe. We use the crab-apple for preserving even now, although man's ingenuity has succeeded in inducing nature to give us many better tasting kinds.
The amazingly large number of different varieties which we have today have all been brought into existence through the discovery of the process of "grafting." There are a half a dozen or more different methods of grafting. The method most commonly practiced in working with apple trees is called "bud-grafting," and consists of transferring a plate of bark, with one or more buds attached, from one tree to another.
The wood of apple trees is hard, close-grained and often richly colored, and is suitable for turning or cabinet work. Apple-growers classify apples into three different kinds, each consisting of a great many separate varieties. The three general divisions are - table apples, which are characterized by a firm, juicy pulp, a sweetish acid flavor, regular form and beautiful coloring; cooking apples, which possess the quality of forming by the aid of heat into a pulpy mass of equal consistency, and also by their large size and keeping properties; and cider apples, which have a considerable astringency and a richness of juice.
In the Land of the Apple.
The Rogue River Valley, Oregon, in one section of which this photograph was taken, is known all over America for its wonderful apples. One apple-raiser in this district gathered two hundred bushels of apples per acre from his six-year-old trees.
 
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