Note 235 — Chapter XI · TOLEDO.

That ingenious form of vault invented by modern plasterers, in which the transverse arch gives all the data for the shape of the diagonal rib, which is consequently neither a true pointed arch, nor a true curve of any kind, is, of course, the worst of all forms; and it might be thought unnecessary to utter a protest against it, were it not that we see some of our best modern buildings disfigured beyond measure by its introduction. Nothing is simpler than a good vault. The best rule for it is to make a good diagonal arch and a good transverse arch, and the filling in of the cells is pretty sure to take care of itself.