VI. Architectural Deceits are broadly to be considered under three heads:
1st. The suggestion of a mode of structure or support, other than the true one; as in pendants of late Gothic roofs.
2nd. The painting of surfaces to represent some other material than that of which they actually consist (as in the marbling of wood), or the deceptive representation of sculptured ornament upon them.
3rd. The use of cast or machine-made ornaments of any kind.
Now, it may be broadly stated, that architecture will be noble exactly in the degree in which all these false expedients are avoided. Nevertheless, there are certain degrees of them, which, owing to their frequent usage, or to other causes, have so far lost the nature of deceit as to be admissible; as, for instance, gilding, which is in architecture no deceit, because it is therein not understood for gold; while in jewellery it is a deceit, because it is so understood, and therefore altogether to be reprehended. So that there arise, in the application of the strict rules of right, many exceptions and niceties of conscience; which let us as briefly as possible examine.
VII. 1st. Structural Deceits. I have limited these to the determined and purposed suggestion of a mode of support other than the true one. The architect is not bound to exhibit structure; nor are we to complain of him for concealing it, any more than we should regret that the outer surface of the human frame conceal much of its anatomy; nevertheless, that building will generally be the noblest, which to an intelligent eye discovers the great secrets of its structure, as an animal form does, although from a careless observer they may be concealed. In the vaulting of a Gothic roof it is no deceit to throw the strength into the ribs of it, and make the intermediate vault a mere shell. Such a structure would be presumed by an intelligent obser-
