Here the greatest variety of shapes and dispositions of parts are well fitted to excite this idea.

The swan, confessedly a beautiful bird, has a neck longer than the rest of his body, and but a very short tail: is this a beautiful proportion?
We must allow that it is.

But then what shall we say to the peacock, who has comparatively but a short neck, with a tail longer than the neck and the rest of the body taken together?
How many birds are there that vary infinitely from each of these standards, and from every other which you can fix; with proportions different, and often directly opposite to each other! and yet many of these birds are extremely beautiful; when upon considering them we find nothing in any one part that might determine us, _a priori_, to say what the others ought to be, nor indeed to guess anything about them, but what experience might show to be full of disappointment and mistake.

And with regard to the colors either of birds or flowers, for there is something similar in the coloring of both, whether they are considered in their extension or gradation, there is nothing of proportion to be observed.

Some are of but one single color; others have all the colors of the rainbow; some are of the primary colors, others are of the mixed; in short, an attentive observer may soon conclude that there is as little of proportion in the coloring as in the shapes of these objects.