ARCHITECTUREAUTHOR OF "THE ELEMENTARY HISTORY OF ART," "MASTERPIECES OF logo L O N D O N: T. C. & E. C. J A C K CONTENTS
INTRODUCTIONWHAT ARCHITECTURE IS—MATERIALS EMPLOYED—DEFINITION OF DISTINCTIVE FEATURES OF THE TWO MAIN STYLES, TRABEATED AND ARCUATEDIt is only when a building entirely fulfils the purpose for which it is intended and bears the impress of a genuine style that it takes rank as a work of architecture. This definition, exclusive though it at first sight appears, brings within the province of the art every structure which combines with practical utility beauty of design and execution, from the humblest cottage to the most dignified temple or palace. Suitability of material and harmony with its surroundings are among the minor factors that give to a building vitality of character and contribute to its enduring value, a value enhanced by its reflection of the needs and aspirations of those by whom and for whom it was erected. Wood appears to have been the earliest material used for the building of a home when out-of-door dwellings took the place of the caves that were the first shelters of primitive man. At Joigny in France there still exist examples of what are supposed to be the most ancient of all such dwellings, namely circular holes, locally known as buvards, in which the trunk of a tree had been fixed, the branches plastered over with clay forming the roof of a simple but rain-proof refuge. Huts of wattle and hurdle work dating from prehistoric times have also been preserved, some rising from the ground, others from platforms resting on piles sunk in the beds of lakes. These were in their time superseded by stronger structures, with walls made of squared beams piled up horizontally and fastened together at the corners with wooden pegs; the roof being formed of roughly sawn planks. Out of such primeval houses as these were evolved in the course of centuries the picturesque half-timbered cottages of mediÆval Europe and the quaint wooden churches of Norway such as the characteristic one at Hitterdal. Limestone, granite, and sandstone were used for building at a very remote period in much the same way as wood, large blocks, fresh from the quarry, of all manner of different shapes, being piled up horizontally or stood on edge, no cement being employed, though in certain cases crushed stone was used to fill up the spaces between the blocks. To walls or buildings of which courses of undressed stone were the only materials, the name of Cyclopean has been given because of the erroneous belief that it was originated by the Cyclopes, an imaginary race of giants, supposed to have lived in Thrace, a province of ancient Greece. Bricks, that is to say, dried blocks of clay, were used at a very early date as a supplement to or substitute for wood and stone for building purposes. The most ancient bricks were not subjected to artificial heat but were simply exposed to the sun, and even when kiln-baked bricks were introduced they were often employed merely to face the older variety. Spacious and lofty buildings consisting entirely of bricks were erected at a very early date in Assyria, Persia, and elsewhere, and some of the most noteworthy architectural survivals of the Roman Empire are of the same material. The main features of a building are determined by the shape of the walls or the mode of arrangement of the pillars that take the place of walls, the way in which the roof is constructed, and that in which the openings of the doors and windows are spanned. The earliest roofs were flat, and the most ancient mode of linking together the supports of doors and windows was to place a plank of wood or slab of stone known as a lintel across them at the top. To this style of roofing and spanning, which reached its most perfect development in the temples of Greece, the name of the trabeated was given, derived in the first instance from the so-called trabea, a toga adorned with horizontal stripes. It was only by very gradual degrees that the trabeated mode of roofing and spanning was succeeded by what is known as the arcuated, or that in which the arch takes the place of the horizontal beam. In early Roman temples and palaces the Greek style was long carefully copied, but in utilitarian works such as bridges, viaducts, and drains the arch was employed at a very remote period. An arch whether circular or pointed consists of two series of stones cut into the form of wedges known as voussoirs, a central one at the apex or highest point called the keystone locking the two series together. This beautiful contrivance, the inventor of which is unknown, gradually revolutionised the science of architecture. It was used at first, tentatively as it were, in combination with the horizontal beam or slab of stone, but in the end became in its rounded form the distinctive peculiarity of the Romanesque and in its pointed shape of the Gothic style. ARCHITECTURECHAPTER IEGYPTIAN, ASIATIC, AND EARLY AMERICAN ARCHITECTUREThe most ancient existing examples of Egyptian architecture are the royal tombs of the Memphite kingdom known as the Pyramids, of which the oldest is that of King Seneferu (about 3000 B.C.) at Medum, and the largest, which rises to a height of 481 feet from a base 764 feet square, that called the Great Pyramid of King Cheops (3788-3666) at Ghizeh, near Cairo, on which 100,000 men are said to have been continuously employed for thirty years. The latter is not only a marvel of constructive skill, but is by many authorities considered to be a most accurately designed astronomical observatory. The Pyramids consist of masses of admirably squared and polished stones, in certain cases supplemented with bricks piled up in the form of a rectangle around a sepulchral chamber, the entrance to which was most carefully concealed. When the body of the monarch had been placed in it the tapering mound above it was finished off with huge facing blocks, that were skilfully worked into the angle required and finally levelled to a smooth surface. Near the Pyramids of the kings are the tombs, known as Mastabas, of their wives and children and of the great officers of state. They are constructed of stone, are square or oblong in form, and their walls are adorned with paintings of scenes from contemporary life, the whole reminiscent of earlier timber structures. Later tombs are those hewn out of the living rock at Beni Hassan and elsewhere, dating from about 2500 B.C., with porticoes upheld by columns resembling those of Greek temples and flat or curved roofs, the latter suggestive of the principle of the arch having been known to those who excavated them. It was between 1600 B.C. and 1110 B.C. that the Egyptians reached their highest point of civilisation, and it was during that period that were erected the magnificent Theban temples, of which those at Karnak and Luxor, which were connected by an avenue of colossal sphinxes, are the finest still remaining. The plan of all Egyptian temples of whatever size was the same: a horizontal gateway flanked on either side by masses of masonry of considerably greater height than it, known as pylons, their surfaces enriched with symbolic carvings, giving access to a square space open to the sky, and partly surrounded with cloisters, leading into a noble hall of huge dimensions, its flat roof upheld by columns, some with capitals resembling lotus buds, others representing the head of the goddess Isis. Beyond this hall were a number of small dark rooms, the use of which has never been ascertained, enclosing within them the nucleus of the whole, the low narrow mysterious cell or sanctuary in which was enshrined the image of the god to whom the temple was dedicated. Outside these noble buildings were ranged obelisks, or four-sided tapering-pillars of great height, covered with hieroglyphics commemorating the triumphs of the kings, and colossal figures, few of which remain in situ, which added greatly to the dignity of the appearance of the whole. To the same period as the temples of Thebes belong those of very similar general design hewn out of the sides of the mountains of Nubia, of which the best example is the larger of the two at Ipsambul, specially noteworthy for the huge seated figure of the monarch for whom it was built, the great Rameses II, guarding the entrance to it. The tombs of the Theban rulers, like the Nubian temples, were hewn out of the living rock, and are many of them, notably those known as the Tombs of the Kings and the Tombs of the Queens in the plains watered by the Nile, of vast extent, labyrinths of passages, alternating with large rooms, leading to the actual sepulchral chamber. Of considerably later date than any of the buildings referred to above are the temples of Denderah, Edfou, and PhilÆ, erected after the conquest of Egypt by the Greeks, but they all resemble those of the Theban dynasty in general style, whilst that at Esneh is a good example of the results of Roman influence. Very great is the contrast to Egyptian architecture presented by the Asiatic buildings that have been preserved to the present day. In the former stone was the usual material employed, and the mode of construction was as a general rule that known as the post and lintel, whilst in the latter brick was almost exclusively used, and the arch was a distinctive feature. The so-called Babylonian or Chaldean, Assyrian, and Persian styles resemble each other so greatly that they may justly be said to belong to one type, evolved by the inhabitants of the extensive region watered by the Euphrates and Tigris, who like the Egyptians attained to a very advanced civilisation at a remote period. Of the temples not a single one has been preserved, but the remains have recently been excavated, in the mounds on the site of Babylon, of four that consisted of numerous chambers enclosing a large court with towered gateways, whilst at Assur another has been uncovered of a somewhat similar design. To atone for the lack of temples many Asiatic palaces have been to some extent reconstructed, the most remarkable being those unearthed near the villages of Nimrod, Khorsabad, and Koyunjik, all supposed to be relics of Nineveh. They originally consisted of lofty many-roomed structures raised on high platforms, and entered from arched gateways flanked by colossal winged bulls of stone. The brick walls were encased in alabaster slabs carved with figure subjects in low relief, some of which are in the British Museum, and galleries, rising from columns with capitals that foreshadowed Greek forms, admitted air and light freely. The Palace of Nebuchadnezzar has also recently been identified, and must when uninjured have been an immense castle-like pile with a vast number of courts and halls to which a paved way led up. Tombs and palaces are the chief relics of Persian architecture. Many of the former, notably that near Murghab, supposed to have been the sepulchre of Cyrus, resemble Greek temples in general style, whilst others are rock-cut and recall the Mastabas of Egypt. Of the palaces those at Persepolis were the most remarkable, for in them Persian architecture reached its fullest development. Their ruins, that rise from a platform some forty feet high hewn out of the surface of the living rock, to which long flights of steps led up, consist of vast columned halls entered from detached porticoes known as propylÆa. When intact the largest of these halls, named after Xerxes, must have exceeded in size the cathedrals of Canterbury or Winchester. Other noteworthy relics of early Asiatic architecture are the tombs of Lycia, Phrygia, and Lydia. The first named—of which the so-called tomb of the Harpies now in the British Museum is a typical example—are all either cut in the living rock or carved out of detached masses of stone, in either case recalling in their general appearance the log-huts of prehistoric times. More ornate than those of Lycia, the Phrygian sepulchral monuments, of which the grave of Midas at Doganlu is the finest, are also rock hewn, but their shape and decoration are more suggestive of the tent than the wooden dwelling, whilst those in Lydia are comparatively primitive, being in some cases, notably in the Tumulus of Tantalus on the Gulf of Smyrna, mere masses of stone heaped up above a huge mound. The most ancient examples of Indian architecture are the Stambhas or LÂts, the earliest dating from the time of Asoka (272-236 B.C.), that are pillars bearing inscriptions and surmounted by a symbolic animal such as an elephant or a lion, of which there is a good specimen at Allahabad, and the Stupas or Topes, mounds encased in masonry, crowned by a reliquary containing memorials of Buddha or of his chief disciples, and enclosed within a stone railing elaborately carved with scenes from the life of the founder of Buddhism, with an even more ornate gateway at each of the four corners, of which the finest is the larger of two at Sanchi in Central India. Even more interesting than the LÂts and Stupas are the Viharas or Buddhist monasteries, of which there is a specially good example at Nigope near Behar, and the Chaityas or temples, of which those at Karli, Ellora, Ajunta, and Elephanta are amongst the finest. All alike hewn out of the living rock, the former consist of a square central hall with or without columns, surrounded by cells for the monks, whilst the latter, of more complicated design, resemble in general plan a Roman basilica. A wide nave with rows of massive pillars upholding a slightly domed roof is flanked by lateral aisles, and at the eastern end rises a semicircular sanctuary containing a seated figure of Buddha. Out of the Buddhist religion grew that known as the Jaina, and many fine temples, of which the most remarkable are that at Sadri and the Dilwana Temple on Mount Abu, remain that were erected for the use of its professors. It was usual to group a number on some hill-top, and the plan of each was generally that of a Greek cross, a columned portico giving access to a complex collection of shrines, each approached by avenues of pillars and roofed in with a separate dome, whilst the exterior was adorned with rounded towers finished off with pointed finials suggestive of a spire, the whole both inside and out being richly decorated with carvings. Hindu architecture, or that of those who hold the Brahmanic faith, differs very greatly from Buddhist, its chief characteristic being a lofty pyramidal tower of several stories, as a general rule covered with ornament, that reached its fullest development in the so-called pagodas, of which there are fine specimens at Jaggernaut, Mahavellipore, and Palitana. In different parts of India various modifications of this general style occur to which distinctive names have been given, but the same spirit may be said to pervade them all, from the great Temples of Bhuvaneswar, Tanjore, Bundaban, and elsewhere, to the humbler shrines scattered throughout the length and breadth of the vast continent and of its island dependencies. There is nothing very distinctive about the architecture of China or Japan. The Buddhist temples in both countries recall those of India, but the pagodas, most of which are of wood faced with porcelain tiles, differ slightly in having a curved roof to each story. The palaces of China are impressive on account of their vast extent and the use of copper in their construction, but the domestic buildings of Japan are all of comparatively small size. In America as in Asia are many deeply interesting architectural relics of the civilisation of the early inhabitants, of which the most remarkable are the ruins of Cyclopean buildings on the shores of Lake Tatiaca, the remains of the ancient city of Cuzco, all in Peru, and the Teocallis or temples and Palaces of the kings in Mexico, Yucatan, and Guatemala, none of which however call for description here as they did not influence the architecture of the future in their own or any other country. CHAPTER IIGREEK ARCHITECTUREIn their architecture as in their sculpture the Greeks gave eloquent expression to the exquisite feeling for symmetry of form which was one of their most distinctive characteristics. Architects and masons were in close touch with the people for whom they built, no social barriers, so far as the arts and crafts were concerned, divided class from class, citizens, aliens, and even slaves vying with each other in their zeal to produce the best work possible. The finest buildings of ancient Greece and its dependencies entirely fulfilled the conditions of true architecture, for they were beautiful alike in design and execution, admirably adapted to the purpose for which they were erected, and in complete harmony with their surroundings. Moreover they are of exceptional importance in the history of the evolution of the art on account of the influence they exercised on that of other countries, all their distinctive features having been either copied or modified in those of the rest of Europe. The Greeks, though they were doubtless acquainted with the arch, the dome, and the tower, refrained as a general rule from using them, probably because they considered them unsuitable to the topographical and climatic conditions that prevailed in their native land. They achieved their highest results by means of correctness of proportion and dignity of outline, giving far more attention to the exterior than to the interior of their buildings, and in this respect differing greatly from the Egyptians, who endeavoured to impress the spectator chiefly by the vast extent and massiveness of their temples and palaces. Recent discoveries on the site of Knossos in Crete of the remains of a many-roomed palace, and elsewhere in the same island of circular stone tombs, all of which betray strong Oriental influence, confirm the opinion of archÆologists that it was in the islands of the Ægina Sea that the first works of architecture properly so called were erected in Europe. On the mainland of Greece, notably at MycenÆ and Tiryns, exists relics of many buildings, including at the former the noble Lion Gate that gave access to the Acropolis, and at the latter the residence of a chieftain, which maintain the continuity between the earliest and the latest phase of Greek architecture, and may justly be said to presage the triumphs of the Golden Age. From first to last Hellenic architecture was characterised by unity of purpose, its grandest forms being essentially the same in general principle as its earliest efforts, the mud walls with timber pillars upholding a flat wooden roof, having been gradually transformed into stately colonnaded structures in costly materials, that to this day remain absolutely unrivalled in their exquisite beauty of proportion and the close correlation of every detail with each other and the whole. The grand temples of Greece were built either of stone or of marble. As a general rule they are set on a platform to which a long flight of steps lead up, and are enclosed within an outer wall or a continuous colonnade. Their plan is extremely simple: a parallelogram, formed in some cases entirely of columns, in others with walls at the side and columns at the ends only, encloses a second and considerably smaller pillared space known as the cella or naos, that enshrined the image of the god to whom the building was dedicated, and was entered from a pronaos or porch, and with a posticum or back space behind it, sometimes supplemented by a kind of second cella called the opisthodomus or back temple. The front columns at either end are spanned by horizontal beams that uphold a sloping gable called a pediment, the flat, three-cornered surface of which is generally adorned with sculpture in bas-relief, and along the side-columns is placed what is known as the entablature, that consists of three parts, the architrave resting on the capitals of the columns, the frieze above it and the cornice, the last of which sustains the flat roof, usually covered with tiles or marble copies of tiles. Greek architecture is generally divided into three groups or orders: the Doric, Ionic, and Corinthian, each of which, though the buildings belonging to them resemble each other in general plan, is distinguished by certain peculiarities of the columns and entablatures. The Doric was the earliest to be employed, but the Ionic, that early succeeded it, was long used simultaneously with it, sometimes even in the same building, whilst the Corinthian did not come into use until considerably later. In the Doric order the column has no separate base, but rises direct from the top step of the platform on which the building it belongs to stands. It is of massive form and has what is known as an entasis or slightly convex surface, it is generally fluted, that is to say, cut into parallel perpendicular channels, several rings called annulets connecting it with the capital, which consists of an echinus or rounded moulding and an abacus or unrounded slab resting on the echinus. The Doric entablature is equally simple, the architrave being perfectly plain, whilst the frieze is adorned with triglyphs or three upright projections with grooves between them, set at equal distances from each other, the spaces separating them, known as metopes, being as a rule enriched with fine sculptures of figure subjects. The frieze is connected with the cornice by narrow bands called mutules resting on the triglyphs and metopes, and the cornice itself has a plain lower band known as the corona, surmounted by more or less decorated courses of stone or marble. The Ionic and Corinthian orders are alike characterised by lightness and grace rather than massiveness and simplicity. In both, the columns, instead of rising direct from the platform, have a complex base consisting of a number of circular mouldings above another, the fluted shafts are comparatively slim and tapering, and the channels in them are divided by spaces called fillets. In the Ionic order the flat abacus of the Doric capital is replaced by two coiled volutes projecting beyond the echinus on either side, and the horizontal portion between the volutes is surmounted by finely carved leaf mouldings. The Corinthian order is specially distinguished by the ornate decoration of the capitals, that represent calices of flowers and leaves, chiefly those of the acanthus, arranged so as to point upwards and curve outwards in much the same style as they do in nature. The architrave in both the Ionic and the Corinthian orders consists of plain slabs, but the frieze—which is not divided as in Doric buildings into triglyphs and metopes—is in nearly every case enriched with a series of beautiful figure subjects, and is therefore known as the Zoophorus or figure-bearer. Among the most ancient remains of sacred Greek architecture are those of the HerÆon or Sanctuary of the Goddess Hera at Olympia; of the temple that preceded the Parthenon at Athens; and of those at Assos in Asia Minor, Selinus in Sicily, and Corcyra in Corfu, the last a very typical example of archaic Doric, with a pediment in which are primitive sculptures of a gorgon flanked by lions. Of somewhat later date are the ruined temples at Girgenti, Syracuse, and Segesta, all in Sicily, the last the best preserved of all; the group at PÆstum in Southern Italy, of which that of Neptune is the finest, the pediments having been originally filled in with beautifully executed sculptured figures. The Temple of Athene in the island of Ægina marks the transition from the extreme severity of early Doric to the more ornate buildings of the Golden Age of Greek architecture, its decorative sculptures being of exquisite design and execution. The Temple of Jupiter at Athens, begun in the Doric style by Pisistratus about 540 B.C. and not completed until about 174 B.C., has Corinthian capitals on some of its columns, and the Temple of Theseus, of uncertain date, in the same city, that consists entirely of white marble, ranks, in spite of its severe simplicity, even with that of Neptune at PÆstum on account of its fine proportions and the admirable finish of every detail. It was in the Parthenon, or Temple of the Virgin Goddess of Wisdom, at Athens, that the Doric style found its highest expression, for in it were combined the massive grandeur of the archaic period with the refinements of construction, decoration, and lighting of a more scientific but not less Æsthetic age. It occupies the site of an earlier building, the relics of which are referred to above, that was destroyed by Xerxes, and it rises from the summit of the lofty rock of the Acropolis that dominated the ancient city. It was built, it is supposed, by the famous architects Ictinus and Callicrates about 440 B.C., under the enlightened ruler Pericles, and its decorative sculptures, some of which are now in the British Museum, were the work of Phidias and his pupils, and, mutilated though they are, they still rank amongst the greatest masterpieces of plastic art. Before the Parthenon, after being long used as a Christian church, was reduced to ruins by the explosion of a shell, when in 1687 it was desecrated by being converted into a powder magazine by the Turks during their struggle with the Venetians, it must have been one of the very noblest buildings in the world, forming with other sanctuaries and secular buildings on the world-famous hill a spectacle of surpassing grandeur, the pride and glory of the whole Greek world. The Parthenon was 228 feet long by 101 broad, and 64 feet high; the porticoes at each end had a double row of eight columns; the sculptures in the pediments were in full relief, representing in the eastern the Birth of Athene, and in the western the Struggle between that goddess and Poseidon, whilst those on the metopes, some of which are supposed to be from the hand of Alcamenes, the contemporary and rival of Phidias, rendered scenes from battles between the Gods and Giants, the Greeks and the Amazons, and the Centaurs and LapithÆ. Of somewhat later date than the Parthenon and resembling it in general style, though it is very considerably smaller, is the Theseum or Temple of Theseus on the plain on the north-west of the Acropolis, and at BassÆ in Arcadia is a Doric building, dedicated to Apollo Epicurius and designed by Ictinus, that has the peculiarity of facing north and south instead of, as was usual, east and west. Scarcely less beautiful than the Parthenon itself is the grand triple portico known as the PropylÆa that gives access to it on the western side. It was designed about 430 by Mnesicles, and in it the Doric and Ionic styles are admirably combined, whilst in the Erectheum, sacred to the memory of Erechtheus, a hero of Attica, the Ionic order is seen at its best, so delicate is the carving of the capitals of its columns. It has moreover the rare and distinctive feature of what is known as a caryatid porch, that is to say, one in which the entablature is upheld by caryatides or statues representing female figures. Other good examples of the Ionic style are the small Temple of NikÉ Apteros, or the Wingless Victory, situated not far from the PropylÆa and the Parthenon of Athens, the more important Temple of Apollo at BranchidÆ near Miletus, originally of most imposing dimensions, and that of Artemis at Ephesus, of which however only a few fragments remain in situ. Of the sacred buildings of Greece in which the Corinthian order was employed there exist, with the exception of the Temple of Jupiter at Athens already referred to, but a few scattered remains, such as the columns from Epidaurus now in the Athens Museum, that formed part of a circlet of Corinthian pillars within a Doric colonnade. In the Temple of Athena Alea at Tegea, designed by Scopas in 394, however, the transition from the Ionic to the Corinthian style is very clearly illustrated, and in the circular Monument of Lysicrates, erected in 334 B.C. to commemorate the triumph of that hero's troop in the choric dances in honour of Dionysos, and the Tower of the Winds, both at Athens, the Corinthian style is seen at its best. In addition to the temples described above, some remains of tombs, notably that of the huge Mausoleum at Halicarnassus in memory of King Mausolus, who died in 353 B.C., and several theatres, including that of Dionysos at Athens, with a well-preserved one of larger size at Epidaurus, bear witness to the general prevalence of Doric features in funereal monuments and secular buildings, but of the palaces and humbler dwelling-houses in the three Greek styles, of which there must have been many fine examples, no trace remains. There is however no doubt that the Corinthian style was very constantly employed after the power of the great republics had been broken, and the Oriental taste for lavish decoration replaced the love for austere simplicity of the virile people of Greece and its dependencies. CHAPTER IIIROMAN ARCHITECTUREAfter the Golden Age of Greek architecture properly so called was over, a kind of aftermath prevailed for some little time in the peninsula and the outlying colonies of Greece, to be succeeded by a transition time to which the name of the Hellenistic has been given, during which is supposed to have been inaugurated the use of the arch and the vault, which were in course of time to revolutionise the art of building. It has long been customary to give to the Etruscans, an Asiatic people who in very early times occupied a considerable portion of Italy, the credit of the first introduction of the arch in Western Europe. It is however now more generally believed that the Roman style of building was an offshoot of the Hellenistic, in which the dome was certainly employed, though no existing examples of its use can be quoted. The city of Alexandria, founded about 332 B.C. by Alexander the Great, is known to have had four principal colonnaded streets leading from a four-arched central building, and many are of opinion that much of the town was built over arched cisterns. The dome may possibly have been in the first instance introduced into western Europe as a cover for the hot baths in which the wealthy delighted, and its form was probably the same as that of the one preserved at Pompeii. The famous arched drain at Rome, known as the Cloaca Maxima, so constantly referred to as the greatest masterpiece of the Etruscans was not, it has now been proved, built until after their subjugation and extinction as a nation. For all that they were without doubt most skilful architects and engineers; the walls of their cities were of cyclopean masonry and were entered from arched gateways, a good example of which is to be seen at Volterra, constructed of wedge-shaped stones fixed without cement. Their rock-cut tombs, such as those at Corneto, Vulci, and Chiusi, are divided into many chambers, the walls adorned with paintings, the roof upheld by columns, and the faÇades resembling those of Egyptian temples, whilst the tumuli in which they sometimes buried their dead are surmounted by pyramids of earth resting on stone foundations. From whatever source Roman architects got their inspiration, they very soon absorbed all external influences and stamped the buildings they erected with a character of their own. From the first sun-dried bricks, sometimes combined with stone, were the chief materials used, even the grander structures of the best period such as the huge palaces and halls were of plastered brickwork, stone having been as a general rule reserved for such works as temples, theatres, and triumphal arches. Concrete was also largely employed, and timber in many cases was turned to account for roofing. The most distinctive peculiarity of the architecture of the Romans is the vaulted roof, which they employed in an infinite variety of ways, introducing it at every possible opportunity. The simplest form, known as the waggon or barrel vault, is a semicircular arch spanning two walls, whilst a more elaborate contrivance consists of two intersecting vaults of the same height crossing each other at right angles, which was used in Rome as early as 75 B.C. These two forms were sometimes supplemented by what are distinguished as conches or half-domes over external semicircular recesses, of which the apse is a characteristic example. With the aid of these three varieties of vaulting, that were occasionally combined with consummate skill, the Romans were able to roof in large or small circular spaces, and in some few cases, as in the Baths of Caracalla at Rome, they even to a certain extent anticipated the clever contrivance known as the pendentive, a triangular piece of vaulting springing from the corners of a right-angled enclosure, that was later brought to such perfection in Byzantine architecture. With their wonderful system of vaulting the Romans combined the columnation and entablature of the Greeks, introducing innovations however that were in many cases anything but improvements. Thus they sometimes supplemented the foliage of the Corinthian capital with the volutes of the Ionic; whilst what is known as the Tuscan style is really merely a modification of the Doric, and is wanting in the simple dignity that characterised the latter, the metopes being adorned with sculptures very inferior to the beautiful figure subjects of the Parthenon and other Greek temples. Roman architects were in fact rather skilful engineers and adapters of the Æsthetic conceptions of others than original designers of new forms of beauty, but they were unrivalled in their power of harmoniously co-ordinating in a single building an infinite variety of structural features. They were moreover exceptionally successful in the laying out of cities, as proved by the wonderful groups of buildings in the fora or public squares in which courts of justice and markets were held, of the capital and other cities, and by the fine continuous vistas of their streets, in which irregularities were masked by clever contrivances, adding greatly to the symmetry of the general effect. Temples, basilicas, baths, bridges, aqueducts, triumphal arches, palaces, and private houses were all set in the environment most suitable to them, and even tombs were ranged according to a definite plan, not, as in most modern cemeteries, dotted here and there in an arbitrary manner. |