We observe, then, a beauty of a third species:--Her face is generally oval; her high and pale forehead announces the intellectuality of her character; her intensely expressive eye is full of sensibility; in her lower features, modesty and dignity are often united; she has not the expanded bosom, the general embonpoint, or the beautiful complexion, of the second species; and she boasts easy and graceful motion, rather than the elegant proportion of the first.--The whole figure is characterized by intellectuality and grace. Such are the three species of beauty of which all the rest are varieties. Now, as it is in general one only of these species which characterizes any one woman, and as each of these species is suited to the wants of, and is consequently agreeable to, a different individual, it is obvious why the common vague reports of the beauty of any woman are always so various, inconsistent, or contradictory. In the more accurate study of this subject, it is indispensable that the reader should understand the scientific principles on which the preceding brief analysis of female beauty, as reducible to three species, is founded. To attain this knowledge, and to acquire facility in the art of distinguishing and judging of beauty in woman, a little general knowledge of anatomy is absolutely essential. The writer begs, therefore, attention to the following sketch. It may not at first seem interesting to the general reader; but it is the sole basis of a scientific knowledge of female beauty; the study of it during one hour is sufficient to apprehend it in all its bearings; and it will obviate every future difficulty. In viewing the human organs in a general manner, a class of these organs at once obtrudes itself upon our notice, from its consisting of an apparatus of levers, from its performing motion from place to place or locomotion, and from these motions being of the most obvious kind.--A little more observation presents to us another class, which is distinguished from the preceding by its consisting of cylindrical tubes, by its transmitting and transmuting liquids, performing vascular action or nutrition, and by its motions being barely apparent.--Farther investigation discovers a third, which differs essentially from both these, in its consisting of nervous particles, in its transmitting impressions from external objects, performing nervous action or thought, and in that action being altogether invisible. Thus, each of these classes of organs is distinguished from another by the structure of its parts, by the purposes which it serves, and by the greater or less obviousness of its motions.