§ XV. The one beside it is one of those of the lately built college at Edinburgh. I have not taken it as worse than many others (just as I have not taken the St. Mark’s tower as better than many others); but it happens to compress our British system of tower building into small space. The Venetian tower rises 350 feet,[62] and has no buttresses, though built of brick; the British tower rises 121 feet, and is built of stone, but is supposed to be incapable of standing without two huge buttresses on each angle. The St. Mark’s tower has a high sloping roof, but carries it simply, requiring no pinnacles at its angles; the British tower has no visible roof, but has four pinnacles for mere ornament. The Venetian tower has its lightest part at the top, and is massy at the base; the British tower has its lightest part at the base, and shuts up its windows into a mere arrowslit at the top. What the tower was built for at all must therefore, it seems to me, remain a mystery to every beholder; for surely no studious inhabitant of its upper chambers will be conceived to be pursuing his employments by the light of the single chink on each side; and, had it been intended for a belfry, the sound of its bells would have been as effectually prevented from getting out as the light from getting in.
§ XVI. In connexion with the subject of towers and of superimposition, one other feature, not conveniently to be omitted from our house-building, requires a moment’s notice,—the staircase.
In modern houses it can hardly be considered an architectural feature, and is nearly always an ugly one, from its being apparently without support. And here I may not unfitly note the important distinction, which perhaps ought to have been dwelt upon in some places before now, between the marvellous and the perilous in apparent construction. There are many edifices which are awful or admirable in their height, and lightness, and boldness of form, respecting which, nevertheless, we have no fear that they should fall. Many a mighty dome and aërial aisle and arch may seem to stand, as I said, by miracle, but by steadfast miracle notwithstanding; there is no fear that the miracle should cease. We have a sense of inherent power in them, or, at all events, of concealed and mysterious provision for their safety. But in leaning towers, as of Pisa or Bologna, and in much minor architecture, passive architecture, of modern times, we feel that there is but a chance between the building and destruction; that there is no miraculous life in it, which animates it into security, but an obstinate, perhaps vain, resistance to immediate danger. The appearance of this is often as strong in small things as in large; in the sounding-boards of pulpits, for instance, when sustained by a single pillar behind them, so that one is in dread, during the whole sermon, of the preacher being crushed if a single nail should give way; and again, the modern geometrical unsupported staircase. There is great disadvantage, also, in the arrangement of this latter, when room is of value; and excessive ungracefulness in its awkward divisions of the passage walls, or windows. In mediæval architecture, where there was need of room, the staircase was spiral, and enclosed generally in an exterior tower, which added infinitely to the picturesque effect of the building; nor was the stair itself steeper nor less commodious than the ordinary compressed straight staircase of a modern dwelling-house. Many of the richest towers of domestic architecture owe their origin to this arrangement. In Italy the staircase is often in the open air, surrounding the interior court of the house, and giving access to its various galleries or loggias: in this case it is almost always supported by bold shafts and arches, and forms a most interesting additional feature of the cortile, but presents no peculiarity of construction requiring our present examination.
We may here, therefore, close our inquiries into the subject of construction; nor must the reader be dissatisfied with the simplicity or apparent barrenness of their present results. He will find, when he begins to apply them, that they are of more value than they now seem; but I have studiously avoided letting myself be drawn into any intricate question, because I wished to ask from the reader only so much attention as it seemed that even the most indifferent would not be unwilling to pay to a subject which is hourly becoming of greater practical interest. Evidently it would have been altogether beside the purpose of this essay to have entered deeply into the abstract science, or closely into the mechanical detail, of construction: both have been illustrated by writers far more capable of doing so than I, and may be studied at the reader’s discretion; all that has been here endeavored was the leading him to appeal to something like definite principle, and refer to the easily intelligible laws of convenience and necessity, whenever he found his judgment likely to be overborne by authority on the one hand, or dazzled by novelty on the other. If he has time to do more, and to follow out in all their brilliancy the mechanical inventions of the great engineers and architects of the day, I, in some sort, envy him, but must part company with him: for my way lies not along the viaduct, but down the quiet valley which its arches cross, nor through the tunnel, but up the hill-side which its cavern darkens, to see what gifts Nature will give us, and with what imagery she will fill our thoughts, that the stones we have ranged in rude order may now be touched with life; nor lose for ever, in their hewn nakedness, the voices they had of old, when the valley streamlet eddied round them in palpitating light, and the winds of the hill-side shook over them the shadows of the fern.
[60] I have spent much of my life among the Alps; but I never pass, without some feeling of new surprise, the Chalet, standing on its four pegs (each topped with a flat stone), balanced in the fury of Alpine winds. It is not, perhaps, generally known that the chief use of the arrangement is not so much to raise the building above the snow, as to get a draught of wind beneath it, which may prevent the drift from rising against its sides.
[61] [Appendix 20], “Shafts of the Ducal Palace.”
[62] I have taken Professor Willis’s estimate; there being discrepancy among various statements. I did not take the trouble to measure the height myself, the building being one which does not come within the range of our future inquiries; and its exact dimensions, even here, are of no importance as respects the question at issue.