Read Ebook: The Principles of Gothic Ecclesiastical Architecture Elucidated by Question and Answer 4th ed. by Bloxam Matthew Holbeche

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Q. How is the triangular-headed or straight-lined pointed arch formed, and when did it prevail?

A. It may be described as formed by the two upper sides of a triangle, more or less obtuse or acute. It is generally considered as one of the characteristics of the Anglo-Saxon style, where it is often to be met with of plain and rude construction. But instances of this form of arch, though they are not frequent, are to be met with in the Norman and subsequent styles. Arches, however, of this description, of late date, may be generally known by some moulding or other feature peculiar to the style in which it is used.

Q. What different kinds of round-headed arches are there?

A. The semicircular arch , the stilted arch , the segmental arch , and the horse-shoe arch .

Q. How are they formed or described?

A. The semicircular arch is described from a centre in the same line with its spring; the stilted arch in the same manner, but the sides are carried downwards in a straight line below the spring of the curve till they rest upon the imposts; the segmental arch is described from a centre lower than its spring; and the horse-shoe arch from a centre placed above its spring.

Q. During what period of time do we find these arches generally in use?

A. The semicircular arch, which is the most common, we find to have prevailed from the time of the Romans to the close of the twelfth century, when it became generally discarded; and we seldom meet with it again, in its simple state, till about the middle of the sixteenth century. It is in some degree considered as a characteristic of the Anglo-Saxon and Norman styles. The stilted arch is chiefly found in conjunction with the semicircular arch in the construction of Norman vaulting over a space in plan that of a parallelogram. The segmental arch we meet with in almost all the styles, used as an arch of construction, and for doorway and window arches; whilst the form of the horse-shoe arch seems, in many instances, to have been occasioned by the settlement and inclination of the piers from which it springs.

Q. Into how many classes may the pointed arch be divided?

A. Into two, namely, the simple pointed arch described from two centres, and the complex pointed arch described from four centres.

Q. What are the different kinds of simple pointed arches?

A. The LANCET, or acute-pointed arch; the EQUILATERAL pointed arch; and the OBTUSE-ANGLED pointed arch.

Q. How is the lancet arch formed and described?

A. It is formed of two segments of a circle, and its centres have a radius or line longer than the breadth of the arch, and may be described from an acute-angled triangle. .

Q. How is the equilateral arch formed and described?

A. From two segments of a circle; the centres of it have a radius or line equal to the breadth of the arch, and it may be described from an equilateral triangle.

Q. How is the obtuse-angled arch formed and described?

A. Like the foregoing, it is formed from two segments of a circle, and the centres of it have a radius shorter than the breadth of the arch; it is described from an obtuse-angled triangle.

Q. During what period were these pointed arches in use?

A. They were all gradually introduced in the twelfth century, and continued during the thirteenth century; after which the lancet arch appears to have been generally discarded, though the other two prevailed till a much later period.

Q. What are the different kinds of complex pointed arches?

A. Those commonly called the OGEE, or contrasted arch; and the TUDOR arch.

Q. How is the ogee, or contrasted arch, formed and described?

A. It is formed of four segments of a circle, and is described from four centres, two placed within the arch on a level with the spring, and two placed on the exterior of the arch, and level with the apex or point ; each side is composed of a double curve, the lowermost convex and the uppermost concave.

Q. When was the ogee arch introduced, and how long did it prevail?

A. It was introduced early in the fourteenth century, and continued till the close of the fifteenth century.

Q. How is the Tudor arch described?

A. From four centres; two on a level with the spring, and two at a distance from it, and below.

Q. When was the Tudor arch introduced, and why is it so called?

A. It was introduced about the middle of the fifteenth century, or perhaps earlier, but became most prevalent during the reigns of Henry the Seventh and Henry the Eighth, under the Tudor dynasty, from which it derives its name.

Q. What other kinds of arches are there worthy of notice?

A. Those which are called foiled arches, as the round-headed trefoil , the pointed trefoil , and the square-headed trefoil . The first prevailed in the latter part of the twelfth and early part of the thirteenth century, chiefly as a heading for niches or blank arcades; the second, used for the same purpose, we find to have prevailed in the thirteenth century; and the latter is found in doorways of the thirteenth, fourteenth, and fifteenth centuries. In all these the exterior mouldings follow the same curvatures as the inner mouldings, and are thus distinguishable from arches the heads of which are only foliated within.

OF THE ANGLO-SAXON STYLE.

Q. During what period of time did this style prevail?

A. From the close of the sixth century, when the conversion of the Anglo-Saxons commenced, to the middle of the eleventh century.

Q. Whence does this style appear to have derived its origin?

A. From the later Roman edifices; for in the most ancient of the Anglo-Saxon remains we find an approximation, more or less, to the Roman mode of building, with arches formed of brickwork.

Q. What is peculiar in the constructive features of Roman masonry?

A. Walls of Roman masonry in this country were chiefly constructed of stone or flint, according to the part of the country in which the one material or other prevailed, embedded in mortar, bonded at certain intervals throughout with regular horizontal courses or layers of large flat Roman bricks or tiles, which, from the inequality of thickness and size, do not appear to have been shaped in any regular mould.

Q. What vestiges of Roman masonry are now existing in Britain?

A. A fragment, apparently that of a Roman temple or basilica, near the church of St. Nicholas at Leicester, which contains horizontal courses of brick at intervals, and arches constructed of brickwork; the curious portion of a wall of similar construction, with remains of brick arches on the one side, which indicate it to have formed part of a building, and not a mere wall as it now appears, at Wroxeter, Salop; and the polygonal tower at Dover Castle, which, notwithstanding an exterior casing of flint, and other alterations effected in the fifteenth century, still retains many visible features of its original construction of tufa bonded with bricks at intervals. Roman masonry, of the mixed description of brick and stone, regularly disposed, is found in walls at York, Lincoln, Silchester, and elsewhere; and sometimes we meet with bricks or stone arranged herring-bone fashion, as in the vestiges of a Roman building at Castor, Northamptonshire, and the walls of a Roman villa discovered at Littleton, Somersetshire.

Q. Have we any remains of the ancient British churches erected in this country in the third, fourth, or fifth centuries?

A. None such have yet been discovered or noticed; for the ruinous structure at Perranzabuloe in Cornwall, which some assert to have been an ancient British church, is probably not of earlier date than the twelfth century; and the church of St. Martin at Canterbury, built in the time of the Romans, which Augustine found on his arrival still used for the worship of God, was rebuilt in the thirteenth century, but, to all appearance, with the same materials of which the original church was constructed.

Q. Do any of our churches bear a resemblance to Roman buildings?

A. The church now in ruins within the precincts of the Castle of Dover presents features of early work approximating Roman, as a portal and window-arches formed of brickwork, which seem to have been copied from those in the Roman tower near adjoining; the walls also have much of Roman brick worked up into them, but have no such regular horizontal layers as Roman masonry displays. The most ancient portions of this church are attributed to belong to the middle of the seventh century. The church of Brixworth, Northamptonshire, is perhaps the most complete specimen we have existing of an early Anglo-Saxon church: it has had side aisles separated from the nave by semicircular arches constructed of Roman bricks, with wide joints; these arches spring from square and plain massive piers. There is also fair recorded evidence to support the inference that this church is a structure of the latter part of the seventh century. Roman bricks are worked up in the walls, in no regular order, however, but indiscriminately, as in the church at Dover Castle.

Q. What peculiarities are observable in masonry of Anglo-Saxon construction?

A. From existing vestiges of churches of presumed Anglo-Saxon construction it appears that the walls were chiefly formed of rubble or rag-stone, covered on the exterior with stucco or plaster, with long and short blocks of ashlar or hewn stone, disposed at the angles in alternate courses. We also find, projecting a few inches from the surface of the wall, and running up vertically, narrow ribs or square-edged strips of stone, bearing from their position a rude similarity to pilasters; and these strips are generally composed of long and short pieces of stone placed alternately. A plain string course of the same description of square-edged rib or strip-work often runs horizontally along the walls of Anglo-Saxon remains, and the vertical ribs are sometimes set upon such as a basement, and sometimes finish under such.

Q. What churches exhibit projecting strips of stonework thus disposed?

A. The towers of the churches of Earls Barton and Barnack, Northamptonshire, and the tower of one of the churches at Barton-upon-Humber, Lincolnshire, are covered with these narrow projecting strips of stonework, in such a manner that the surface of the wall appears divided into rudely formed panels; the like disposition of rib-work appears, though not to so great extent, on the face of the upper part of the tower of Stowe Church, Northamptonshire, of St. Benedict's Church, Cambridge, on the walls of the church of Worth, in Sussex, on the upper part of the walls of the chancel of Repton Church, Derbyshire, and on the walls of the nave and north transept of Stanton Lacey Church, Salop.

Q. Where do we meet with instances where long and short blocks of ashlar masonry are disposed in alternate courses at the angles of walls?

A. Such occur at the angles of the chancel of North Burcombe Church, Wiltshire; at the angles of the nave and chancel of Wittering Church, Northamptonshire; at the angles of the towers of St. Benedict's Church, Cambridge, of Sompting Church, Sussex, and of St. Michael's Church, Oxford, and in other Anglo-Saxon remains. The ashlar masonry forming the angles is not, however, invariably thus disposed.

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