The beautiful formations in the kingdom of organised nature speak loudly for the realism of the aesthetical purposiveness of nature; since we might assume that behind the production of the beautiful there is an Idea of the beautiful in the producing cause, viz. a _purpose_ in respect of our Imagination. Flowers, blossoms, even the shapes of entire plants; the elegance of animal formations of all kinds, unneeded for their proper use, but, as it were, selected for our taste; especially the charming variety so satisfying to the eye and the harmonious arrangement of colours (in the pheasant, in shell-fish, in insects, even in the commonest flowers), which, as it only concerns the surface and not the figure of these creations (though perhaps requisite in regard of their internal purposes), seems to be entirely designed for external inspection; these things give great weight to that mode of explanation which assumes actual purposes of nature for our aesthetical Judgement. On the other hand, not only is Reason opposed to this assumption in its maxims, which bid us always avoid as far as possible unnecessary multiplication of principles; but nature everywhere shows in its free formations much mechanical tendency to the productions of forms which seem, as it were, to be made for the aesthetical exercise of our Judgement, without affording the least ground for the supposition that there is need of anything more than its mechanism, merely as nature, according to which, without any Idea lying at their root, they can be purposive for our judgement. But I understand by _free formations_ of nature _those_ whereby from a _fluid at rest_, through the volatilisation or separation of a portion of its constituents (sometimes merely of caloric), the remainder in becoming solid assumes a definite shape or tissue (figure or texture), which is different according to the specific difference of the material, but in the same material is constant. Here it is always presupposed that we are speaking of a perfect fluid, _i.e._ that the material in it is completely dissolved, and that it is not a mere medley of solid particles in a state of suspension.