There is, however, a certain deception necessarily occurring in Gothic architecture, which relates, not to the points, but to the manner, of support. The resemblance in its shafts and ribs to the external relations of stems and branches, which has been the ground of so much foolish speculation, necessarily induces in the mind of the spectator a sense or belief of a correspondent internal structure; that is to say, of a fibrous and continuous strength from the root into the limbs, and an elasticity communicated _upwards,_ sufficient for the support of the ramified portions. The idea of the real conditions, of a great weight of ceiling thrown upon certain narrow, jointed lines, which have a tendency partly to be crushed, and partly to separate and be pushed outwards, is with difficulty received; and the more so when the pillars would be, if unassisted, too slight for the weight, and are supported by external flying buttresses, as in the apse of Beauvais, and other such achievements of the bolder Gothic. Now, there is a nice question of conscience in this, which we shall hardly settle but by considering that, when the mind is informed beyond the possibility of mistake as to the true nature of things, the affecting it with a contrary impression, however distinct, is no dishonesty, but on the contrary, a legitimate appeal to the imagination. For instance, the greater part of the happiness which we have in contemplating clouds, results from the impression of their having massive, luminous, warm, and mountain-like surfaces; and our delight in the sky frequently depends upon our considering it as a blue vault. But we know the contrary, in both instances; we know the cloud to be a damp fog, or a drift of snow flakes; and the sky to be a lightless abyss. There is, therefore, no dishonesty, while there is much delight, in the irresistibly contrary impression. In the same way, so long as we see the stones and joints, and are not deceived as to the points of support in any piece of architecture, we may rather praise than regret the dextrous artifices which compel us to feel as if there were fibre in its shafts and life in its branches. Nor is even the concealment of the support of the external buttress reprehensible, so long as the pillars are not sensibly inadequate to their duty. For the weight of a roof is a circumstance of which the spectator generally has no idea, and the provisions for it, consequently, circumstances whose necessity or adaptation he could not understand. It is no deceit, therefore, when the weight to be borne is necessarily unknown, to conceal also the means of bearing it, leaving only to be perceived so much of the support as is indeed adequate to the weight supposed. For the shafts do, indeed, bear as much as they are ever imagined to bear, and the system of added support is no more, as a matter of conscience, to be exhibited, than, in the human or any other form, mechanical provisions for those functions which are themselves