farther out the glass is set, the more convenient the
window will be for a person rising and looking out of it. The one,
therefore, is an arrangement for the idle and curious, who care only
about what is going on upon the earth: the other for those who are
willing to remain at rest, so that they have free admission of the light
of Heaven. This might be noted as a curious expressional reason for the
necessity (of which no man of ordinary feeling would doubt for a moment)
of a deep recess in the window, on the outside, to all good or
architectural effect: still, as there is no reason why people should be
made idle by having it in their power to look out of window, and as the
slight increase of light or clearness of view in the centre of a room is
more than balanced by the loss of space, and the greater chill of the
nearer glass and outside air, we can, I fear, allege no other structural
reason for the picturesque external recess, than the expediency of a
certain degree of protection, for the glass, from the brightest glare of
sunshine, and heaviest rush of rain.

FOOTNOTES:

[58] "Seven Lamps," p. 53.

[59] On the north side of the nave of the cathedral of Lyons, there
is an early French window, presenting one of the usual groups of
foliated arches and circles, left, as it were, loose, without any
enclosing curve. The effect is very painful. This remarkable window
is associated with others of the common form.

CHAPTER XVIII.

PROTECTION OF APERTURE.

Sec. I. We have hitherto considered the aperture as merely pierced in the
thickness of the walls; and when its masonry is simple and the fillings
of the aperture are unimportant, it may well remain so. But when the
fillings are delicate and of value, as in the case of colored glass,
finely wrought tracery, or sculpture, such as we shall often find
occupying the tympanum of doorways, some protection becomes necessary
against the run of the rain down the walls, and back by the bevel of the
aperture to the joints or surface of the fillings.

Sec. II. The first and simplest mode of obtaining this is by channelling
the jambs and arch head; and this is the chief practical service of
aperture mouldings, which are otherwise entirely decorative. But as this
very decorative character renders them unfit to be made channels for
rain water, it is well to add some external roofing to the aperture,
which may protect it from the run of all the rain, e