=Species of Chestnut.=--What is called a "species," among plants, is a particular form or type supposed to have descended from one original stock, whether this was composed of one or more individuals. But variations doubtless occurred at the first inception or multiplication of the original, but so long as the offsprings do not differ so widely as to be untraceable to the proemial types, they are held to be varieties of one species. Whether all the chestnuts found in the various countries of the world are descendants of one original tree or group of trees is now beyond our ability to determine; consequently, what are now termed species rests very much upon the opinions of botanists, as may readily be demonstrated by consulting the works of hundreds of authors who have essayed to describe and classify the plants of any locality or country, and this, too, without reaching an absolute finality acceptable to their contemporaries, or at all likely to share a better fate with posterity. For many years after botany began to be recognized as a science, the common American sweet chestnut was considered a distinct species, but in recent years it has been relegated to the position of a widely distributed variety of the European chestnut, and it is so described and classified in most of the botanical works of the present time, and under such names as _Castanea vesca_, variety _Americana_; _Castanea sativa_, variety _Americana_; _Castanea vulgaris_, variety _Americana_, etc. The Asiatic species or varieties--under whichever cognomen we may find them described in botanical works--have fared little better than our American kinds, for some botanists have described the Japan chestnut as a distinct species, while others only as a widely divergent variety of the common European chestnut. I regret that there should be any need of giving so much space to this matter of species and varieties, yet presuming that far the larger number of my readers will not be professional botanists, nor persons with a botanical library at hand to consult for unfamiliar terms, I have thought this explanation in regard to classification might assist them in making clear the apparent confusion of names which, in the main, are only synonyms. Furthermore, I purpose retaining some of the older specific names of the distinct groups of varieties, whether it be strictly in accord with the ideas of eminent authorities or otherwise, because it will be more convenient to do so, and certain phases will thus be made clearer to the practical cultivators of nut trees, for whom this work is written. My wish is to assist those who do not know, but want to learn how to obtain, plant and make nut trees grow and bear remunerative crops.