The following pages are intended to enable my readers to acquire a knowledge of Botany with as little trouble to themselves as possible.

As, however, Botany is a “wide word,” I must here premise that I only propose to treat of that part of the science which relates to the classification of plants, according to the natural system of Jussieu, as improved by the late Professor De Candolle; and that the grand object I have in view is to enable my readers to find out the name of a plant when they see it for the first time; or, if they hear or read the name of a plant, to make that name intelligible to them. Nothing is more natural than to ask the name of every pretty flower we see; but unless the inquirer knows something of botany, the name, if it be a scientific one, will seem only a collection of barbarous sounds, and will convey no ideas to the mind. Half the interest of new greenhouse plants is thus destroyed, as few of them have English names, and strangers will soon cease to make any inquiries respecting them when they find they can obtain no answers that they can understand. Now, a very slight knowledge of botany will take away this mortifying feeling; and the name of a new plant, and the ascertaining the order to which it belongs, will recall a variety of recollections that will open up a new source of interest and enjoyment even in such interesting and enjoyable things as flowers—for we never can enjoy thoroughly anything that we do not understand.

It now only remains for me to say why I have divided my work into two parts. My reason is my belief that a student will always remember more easily a few strongly marked divisions than a number of smaller ones, the differences between which are only faintly perceptible. In a more advanced state of knowledge, it is delightful to trace the minute shades of difference by which the numerous orders are united, so as to form one great whole; but these gentle gradations confuse a beginner. On this account I have thought it best to devote the first part of my work to a few of the more important orders, which differ most widely from each other, and which I have described at a greater length than my space will allow me to bestow upon the whole; and in the second part of my work, I shall give a short account of the whole natural system, introducing the orders described in the first part, in their proper places, so that my readers may see how they are connected with the others.