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Gordon Campbell

[Gr.: ‘high stone’]

Ancient Greek statue with a wooden body and the head and limbs made of stone (usually marble, sometimes limestone). This technique seems to have come into use in Greece at the end of the 6th century bc or the beginning of the 5th, and was predominantly, but not exclusively, employed for cult statues. The wooden bodies of acrolithic statues were covered in sheets of precious metal or draped with textiles regularly renewed in cult ceremonies. In ancient Greece the term acrolith (usually agalma akrolithos or xoanon akrolithos) was used relatively rarely, and is first attested in temple inventories of the 2nd century bc; Vitruvius uses it in Latin as a synonym for colossal statues. It was then reintroduced as a technical term by 18th-century antiquarians.

While the wooden bodies of ancient acroliths are not preserved, their stone extremities have occasionally survived and can be identified through specific characteristics of their technical manufacture (acrolithic heads, for example, have flat undersides, whereas heads fashioned for insertion into stone bodies were made with convex tenons). In the Hellenistic and Roman periods, the extent of stone elements can increase, so that for example the head and naked parts of the chest are made of one marble segment. The appearance of acroliths could be similar to chryselephantine (gold-ivory) statues, to which they may have offered a more cost-effective alternative, although it seems that other considerations, such as their role within the cult ritual, may have been of greater significance. Examples of surviving stone fragments from acroliths are a colossal head in the Ludovisi collection in Rome and an ...

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Agalma  

Article

R. W. Sanderson and Francis Cheetham

Term used to describe two types of stone, one of gypsum and one of limestone.

R. W. Sanderson

‘True’ alabaster is hydrated calcium sulphate, a finely fibrous form of gypsum. It occurs as nodular masses with a felted, fibrous microstructure, variably intermixed with streaks of red or green clay. Deposits of economic size accumulate as precipitated salts in evaporating saline lakes in arid areas. The variety satin spar occurs in vein-like form with the fibres in regular parallel arrangement, giving the mass a silk-like lustre. Alabaster is slightly soluble in water and therefore not suitable for outdoor works; it is very soft and readily cut and polished with the simplest tools. It provides an excellent surface for painting and gilding, without priming being necessary. Geologically ancient deposits provided material for sculptors, although gypsum continues to form in suitable environments in the Middle East, the USA, and elsewhere. European sources exploited for decoration since the Middle Ages are present in ...

Article

Alexander Nagel

[Fr. postautel, retable; Ger. Altar, Altaraufsatz, Altarbild, Altarretabel, Altarrückwand, Retabel; It. ancona, dossale, pala (d’altare); Sp. retablo]

An image-bearing structure set on the rear part of the altar (see Altar, §II), abutting the back of the altarblock, or set behind the altar in such a way as to be visually joined with the altar when viewed from a distance. It is also sometimes called a retable, following the medieval term retrotabulum [retabulum, retrotabularium].

The altarpiece was never officially prescribed by the Church, but it did perform a prescribed function alternatively carried out by a simple inscription on the altarblock: to declare to which saint or mystery the altar was dedicated. In fact, the altarpiece did more than merely identify the altar; its form and content evoked the mystery or personage whose cult was celebrated at the altar. This original and lasting function influenced the many forms taken by the altarpiece throughout its history. Since the altarpiece was not prescribed by the Church, its form varied enormously. For this reason, it is often impossible, and historically inaccurate, to draw neat distinctions between the altarpiece and other elements occasionally associated with the altar apparatus. For example, movable statues, often of the Virgin and Child, were occasionally placed on altars according to ritual needs, and at those times fulfilled the function of the altarpiece....

Article

Philip Ward-Jackson

Term applied particularly to mid-19th-century French sculpture with animal subject-matter. The beginnings of this genre as a significant phenomenon may be located in 1831, when three sculptors, Antoine-Louis Barye, C. Fratin (1801–64) and A. Guionnet (fl 1831–53), all exhibited animal pieces at the Paris Salon. The popularity of such sculpture, and its commercial exploitability through the production of serial bronzes and plasters, induced some sculptors, such as Barye et Cie, to cast and market their own animal statuettes. Antecedents are numerous, but a comparable degree of concentration on animal subjects in sculpture is found only at the end of the 18th century, in the work of the English painter and sculptor George Garrard. Garrard’s animal pieces reflect contemporary concern with ‘improved’ stock-breeding, as well as the involvement with natural history of the encyclopedists. A much publicized debate in 1830 on comparative anatomy, between Etienne Geoffroy de Saint Hilaire and his pupil Georges Cuvier, stimulated widespread interest in zoology, as did the growth of the Paris Jardin des Plantes, where several generations of sculptors studied animals from life. They could observe dissections at the Musée National d’Histoire Naturelle, where Barye occupied the post of Professor of Zoological Drawing from ...

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Article

Trevor Proudfoot

Material most commonly used as a cheaper alternative to stone. Occasionally, its special properties make it a preferred but more expensive choice to stone. In its simplest form, artificial stone is an ashlar covering for buildings (e.g. 18th-century terraced houses by John Nash). It is found in its most sophisticated form as the component of numerous 19th-century terracotta or cement-based sculptures.

The earliest and simplest form of artificial stone is the lime-and-gypsum plaster used to decorate the walls of Egyptian tombs. These facings were predominantly of gypsum plaster lined and painted to simulate the texture of stone. In ancient Rome, renders (first coats of plaster) had a similar design and purpose, although they were applied to a wider variety of buildings. The incorporation of lime, pozzolana, additives of volcanic ash, sherds of pottery and brick dust strengthened the mortars and gave them greater durability. The renders were often painted to increase the illusion that actual stone was used (...

Article

Thorsten Opper

In 1954 a large number of fragments of ancient plaster casts came to light in the Roman city of Baiae on the gulf of Naples. Of a total of 430 fragments, 293 were in a condition that allowed further analysis. This revealed that they originally belonged to a group of 24–35 full-length statues that formed a representative collection of plaster copies of Greek bronze originals (gods, heroes, mythological figures) mainly of the 5th and 4th centuries bc. Twelve of these statues could be identified through comparison with Roman marble copies (e.g. Tyrant Slayers, Ephesian Amazons, Athena Velletri, Westmacott Ephebe, Hera Borghese, Eirene and Ploutos). For others likely identifications have been suggested, but cannot be proven (e.g. Doryphoros). The Baiae plaster statues were technically highly accomplished (hollow-cast figures with internal armatures, probably the first casts produced from high-quality moulds), and are likely to have been imported, perhaps from a place such as Athens, where at least three of the originals were located....

Article

[low relief; It. basso-relievo]

Term for carving, embossing or casting that protrudes only moderately from the background plane (see Relief sculpture).

R. Polacco: ‘Porte e cancelli bronzei medioevali in S. Marco a Venezia’, Ven. A., 3 (1989), pp. 14–23B. Gallistl: Die Bronzetüren Bischof Bernwards Im Dom Zu Hildesheim (Freiberg, 1990)S. Salomi, ed.: Le porte di bronzo dall’Antichità al secolo XIII (Rome, 1990)E. Simi Varanelli: Artisti e dottori nel Medioevo: Il Campanile di Firenze e la rivalutazione delle ‘Arti Belle’ (Rome, 1995), pp. 192C. E. Gilbert: ‘The Pisa Baptistery Pulpit Addresses its Public’, Artibus et historiae, 21/41 (2000), pp. 9–30, 221P. Malgouyres: ‘Due medaglioni di Giovanni Bonazza ad Avignone’, Arte veneta, 57 (2000), pp. 74–5R. J. M. Olson: The Florentine Tondo (Oxford, 2000)A. Saviello: ‘Tugendhafte Eva: Die Frau-Kind-Gruppen in den Reliefs der Grabmalskapelle des heiligen Antonius von Padua’, Mitteilungen des Kunsthistorischen Instituts in Florenz, 49/3 (2005), pp. 323–52...

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