In the clerestory at Freiburg is a window in which the serried saints appear at first sight to be simply framed by lines of pale purple; but on examination these resolve themselves into a simple architectural elevation, with even a hint of unsuspected shadow in it. The date of that example is 1512; and canopies, not to go back to Græco-Roman decoration, begin with the beginning of Gothic. It is adduced, therefore, to show, not the origin of canopy work, but how inevitably something of the sort occurred. Its immediate source is clearly imitation. The thing is borrowed straight from architecture, and indicates, it may justly be said, if not a certain lack of inventive faculty on the part of the designer, at least some disinclination to take the pains to invent.
So in the thirteenth century we have funny little glass penthouses over the figures of saints, architectural in form but not in colour; in the fourteenth windows are crossed by rows of tall brassy disproportioned tabernacles, as yet flat fronted; in the fifteenth, white ghosts of masonry pretend to stand out over the figures; in the sixteenth, altar-like, or other more or less monumental, structures, are pictured with something like the solidity of stonework; and eventually the canopy is merged in painted glass architecture, which joins itself on as best it can to the actual masonry.
The forms of canopy typical of each period of architecture have been discussed in the several chapters on design, but something remains to be said upon canopy work in general, and upon particular instances of it.
The Early canopy goes for nothing as design. Its one merit is that it is inconspicuous. One could wish that the Decorated were equally so. There is, as a rule, no shutting your eyes to its mass of overpowering shrinework. When, by way of exception, it chances to be modest it is sometimes more interesting—as where it is scarcely more than a cusped arch, or where, as at Strassburg, it takes the form of an arcaded band across the window, in which are series of little demi-figures. At Cologne Cathedral also sundry saints are pigeon-holed in this way. Apropos of this, it should be mentioned that it invariably adds to the interest of a canopy, when; for example, the broad shaft of a Decorated canopy enniches angels and other figures, or when they are introduced among its pinnacles or in its base. The wide-spreading German canopy affords scope for variety of design not possible so long as the structure is confined within a single light. In some four-light windows at Erfurt (1349-1372) the broad shafts of the canopies, with saints in separate niches, occupy the whole width of the outer lights, leaving only two lights for the central picture. In a five-light window at Strassburg the canopy is five-arched, allowing separate arches in the outer lights for figures of saints, whilst the three central ones cover a single subject.
In canopies which include niches with separate subsidiary subjects, these are sometimes by way of prelude to the main story. In the cathedral at Berne is something of the kind. There, among the pinnacles of the canopy which crowns the subject of the Adoration, are seen the Kings setting out on their pilgrimage, journeying by night, having audience of Herod, and arriving finally at the city of Bethlehem.
In the great altar-like canopies of the Renaissance there is sometimes a gallery above, with angels or other figures, which give points of colour amidst the white. In any case, the canopy is usually more interesting when it is peopled.
The Perpendicular canopy is in effect much more pleasing than what had gone before, but it sins in its simulation of stonework. There also little figures in white and stain are very effectively introduced into the shafts and other parts of the construction, but more in the form of architectural sculpture. There are some very interesting instances of this at Fairford, though the canopies themselves are not otherwise peculiarly interesting.
The useful device of low, flat-topped canopies, adopted in the nave windows at Cologne Cathedral, seldom occurs out of Germany. It is there most successful. Indeed, these particular canopies are interesting examples of the interpenetration of architectural tracery as well as of its moderate and modest use.
Late German canopies are often much more leafy than French or English; they are less architectural—or rather, the architecture breaks out into more free and flowing growth. The charm of Late Gothic canopy work, as was said, lies in its colour, or in the absence of colour—in its silvery effect, that is to say. And one may safely add that quite the most satisfactory canopies, in whatever style, are those in which white largely prevails, modified by stain, but preserving its greyish character. In later Renaissance work white is still largely used; but it is made less brilliant by painted shadow, and so has less to excuse its architectural pretensions. At Milan there is a window in which what should be white is in various granular tints of brown.
The coloured canopy, to which the Italians adhered (as well as to the border enclosing it), does not frame them as the white glass does. The idea appears to be, on the contrary, that it should form part of the picture. Elsewhere than in Italy coloured canopies, other than yellow, are rare; but they occur. There are, for example, the hideous flesh-coloured constructions peculiar to Germany. At Troyes are some not unsatisfactory little canopies in green, and others in purple (1499). At Châlons-sur-Marne is an effective canopy (1526-1537) of golden arabesque on purple. At Freiburg (1525) is a steely-blue Renaissance canopy, from which depend festoons of white and greenish-yellow, against the ruby ground of the subject. And there are others satisfactory enough. But so invariably effective is the framework of white and stain, that to depart from it seems almost like giving up the very excuse for canopies.