So convinced were the Egyptians and Greeks of this principle, that they never used any other constructive expedient than a perpendicular wall or prop, supporting a horizontal beam; and half the satisfactory effect of their buildings arises from their adhering to this simple though expensive mode of construction. They were perfectly acquainted with the use of the arch and its properties, but they knew that its employment would introduce complexity and confusion into their designs, and therefore they wisely rejected it. Even to the present day the Hindus refuse to use the arch, though it has long been employed in their country by the Mahometans. As they quaintly express it, “An arch never sleeps;” and it is true that by its thrust and pressure it is always tending to tear a building to pieces; in spite of all counterpoises, whenever the smallest damage is done, it hastens the ruin of a building, which, if more simply constructed, might last for ages.
The Romans were the first who introduced a more complicated style. They wanted larger and more complex buildings than had been before required, and they employed brick and concrete to a great extent even in their temples and most monumental buildings. They obtained both space and variety by these means, with comparatively little trouble or expense; but we miss in all their works that repose and harmony which is the great charm that pervades the buildings of their predecessors.
The Gothic architects went even beyond the Romans in this respect. They prided themselves on their constructive skill, and paraded it on all occasions, and often to an extent very destructive of true architectural design. The lower storey of a French cathedral is generally very satisfactory; the walls are thick and solid, and the buttresses, when not choked up with chapels, just sufficient for shadow and relief; but the architects of that country were seized with a mania for clerestories of gigantic height, which should appear internally mere walls of painted glass divided by mullions. This could only be effected either by encumbering the floor of the church with piers of inconvenient thickness or by a system of buttressing outside. The latter was the expedient adopted; but notwithstanding the ingenuity with which it was carried out, and the elegance of many of the forms and ornaments used, it was singularly destructive of true architectural effect. It not only produces confusion of outline and a total want of repose, but it is eminently suggestive of weakness, and one cannot help feeling that if one of these props were removed, the whole would tumble down like a house of cards.
This was hardly ever the case in England: the less ambitious dimensions employed in this country enabled the architects to dispense in a great measure with these adjuncts, and when flying buttresses are used, they look more as if employed to suggest the idea of perfect security than as necessary to stability. Owing to this cause the French have never been able to construct a satisfactory vault: in consequence of the weakness of their supports they were forced to stilt, twist, and dome them to a most unpleasing extent, and to attend to constructive instead of artistic necessities. With the English architects this never was the case; they were always able to design their vaults in such forms as they thought would be most beautiful artistically, and, owing to the greater solidity of their supports, to carry them out as at first designed.[[12]]
It was left for the Germans to carry this system to its acme of absurdity. Half the merit of the old Round arched Gothic cathedrals on the Rhine consists in their solidity and the repose they display in every part. Their walls and other essential parts are always in themselves sufficient to support the roofs and vaults, and no constructive contrivance is seen anywhere; but when the Germans adopted the pointed style, their builders—they can hardly be called architects—seemed to think that the whole art consisted in supporting the widest possible vaults on the thinnest possible pillars and in constructing the tallest windows with the most attenuated mullions. The consequence is, that though their constructive skill still excites the wonder of the mason or the engineer, the artist or the architect turns from the cold vaults and lean piers of their later cathedrals with a painful feeling of unsatisfied expectation, and wonders why such dimensions and such details should produce a result so utterly unsatisfactory.
So many circumstances require to be taken into consideration, that it is impossible to prescribe any general rules in such a subject as this, but the following table will explain to a certain extent the ratio of the area to the points of support in sixteen of the principal buildings of the world.[[13]] As far as it goes, it tends to prove that the satisfactory architectural effect of a building is nearly in the inverse ratio to the mechanical cleverness displayed in its construction.
| Area. | Solids. | Ratio in Decimals | Nearest Vulgar Fractions. | |
| Feet. | Feet. | |||
| Hypostyle Hall, Karnac | 63,070 | 18,681 | .296 | Three-tenths. |
| St. Peter’s, Rome | 227,000 | 59,308 | .261 | One-fourth. |
| Spires Cathedral | 56,737 | 12,076 | .216 | One-fifth. |
| Sta. Maria, Florence | 81,802 | 17,056 | .201 | One-fifth. |
| Bourges Cathedral | 61,590 | 11,091 | .181 | One-sixth. |
| St. Paul’s, London | 84,311 | 11,311 | .171 | One-sixth. |
| Ste. Geneviève, Paris | 60,287 | 9,269 | .154 | One-sixth. |
| Parthenon, Athens | 23,140 | 4,430 | .148 | One-seventh. |
| Chartres Cathedral | 68,261 | 8,886 | .130 | One-eighth. |
| Salisbury Cathedral | 55,853 | 7,012 | .125 | One-eighth. |
| Paris, Notre Dame | 61,108 | 7,852 | .122 | One-eighth. |
| Temple of Peace | 68,000 | 7,600 | .101 | One-ninth. |
| Milan Cathedral | 108,277 | 11,601 | .107 | One-tenth. |
| Cologne Cathedral | 91,164 | 9,554 | .104 | One-tenth. |
| York Cathedral | 72,860 | 7,376 | .101 | One-tenth. |
| St. Ouen, Rouen | 47,107 | 4,637 | .097 | One-tenth. |
At the head of the list stands the Hypostyle Hall, and next to it practically is the Parthenon, which being the only wooden-roofed building in the list, its ratio of support in proportion to the work required is nearly as great as that of the Temple at Karnac. Spires only wants better details to be one of the grandest edifices in Europe, and Bourges, Paris, Chartres, and Salisbury are among the most satisfactory Gothic cathedrals we possess. St. Ouen, notwithstanding all its beauty of detail and design, fails in this one point, and is certainly deficient in solidity. Cologne and Milan would both be very much improved by greater massiveness: and at York the lightness of the supports is carried so far that it never can be completed with the vaulted roof originally designed, for the nave at least.
The four great Renaissance cathedrals, at Rome, Florence, London, and Paris, enumerated in this list, have quite sufficient strength for architectural effect, but the value of this is lost from concealed construction, and because the supports are generally grouped into a few great masses, the dimensions of which cannot be estimated by the eye. A Gothic architect would have divided these masses into twice or three times the number of the piers used in these churches, and by employing ornament designed to display and accentuate the construction, would have rendered these buildings far more satisfactory than they are.
In this respect the great art of the architect consists in obtaining the greatest possible amount of unencumbered space internally, consistent in the first place with the requisite amount of permanent mechanical stability, and next with such an appearance of superfluity of strength as shall satisfy the mind that the building is perfectly secure and calculated to last for ages.