Terra sigillata
Terra sigillata is a term with at least three distinct meanings: as a description of medieval medicinal earth; in archaeology, as a general term for some of the fine red Ancient Roman pottery with glossy surface slips made in specific areas of the Roman Empire; and more recently, as a description of a contemporary studio pottery technique supposedly inspired by ancient pottery. Usually roughly translated as 'sealed earth', the meaning of 'terra sigillata' is 'clay bearing little images' (latin sigilla), not 'clay with a sealed (impervious) surface'. The archaeological term is applied, however, to plain-surfaced pots as well as those decorated with figures in relief, because it does not refer to the decoration but to the makers stamp impressed in the bottom of the vessel.
Terra sigillata as an archaeological term refers chiefly to a specific type of plain and decorated tableware made in Italy and in Gaul (France and the Rhineland) during the Roman Empire. These vessels have glossy surface slips ranging from a soft lustre to a brilliant glaze-like shine, in a characteristic colour range from pale orange to bright red; they were produced in standard shapes and sizes and were manufactured on an industrial scale and widely exported. The sigillata industries grew up in areas where there were existing traditions of pottery manufacture, and where the clay deposits proved suitable. The products of the Italian workshops are also known as Aretine ware from Arezzo and have been collected and admired since the Renaissance. The wares made in the Gaulish factories are often referred to by English-speaking archaeologists as samian ware. Closely related pottery fabrics made in the North African and Eastern provinces of the Roman Empire are not usually referred to as terra sigillata, but by more specific names, e.g. African red slip wares. All these types of pottery are significant for archaeologists: they can often be closely dated, and their distribution casts light on aspects of the ancient Roman economy.
Modern "terra sig" should be clearly distinguished from the close reproductions of Roman wares made by some potters deliberately recreating and using the Roman methods.[1] The finish called 'terra sigillata' by studio potters can be made from most clays, mixed as a very thin liquid slip and settled to separate out only the finest particles to be used as terra sigillata. When applied to unfired clay surfaces, "terra sig" can be polished with a soft cloth or brush to achieve a shine ranging from a smooth silky lustre to a high gloss. The surface of ancient terra sigillata vessels did not require this burnishing or polishing. Burnishing was a technique used on some wares in the Roman period, but terra sigillata was not one of them. The polished surface can only be retained if fired within the low-fire range and will lose its shine if fired higher, but can still display an appealing silky quality.
Roman red gloss pottery
In archaeological usage, the term terra sigillata without further qualification normally denotes the Arretine ware of Italy, made at Arezzo, and Gaulish samian ware manufactured first in South Gaul, particularly at La Graufesenque, near Millau, and later at Lezoux and adjacent sites near Clermont-Ferrand, and at east Gaulish sites such as Trier, Sinzig and Rheinzabern. These high-quality tablewares were particularly popular and widespread in the Western Roman Empire from about 50 BC to the early 3rd century AD.[2][3] Definitions of 'TS' have grown up from the earliest days of antiquarian studies, and are far from consistent; one survey of Classical art says:
Terra sigillata ... is a Latin term used by modern scholars to designate a class of decorated red-gloss pottery .... not all red-gloss ware was decorated, and hence the more inclusive term 'Samian ware' is sometimes used to characterize all varieties of it.[4]
- whereas Anthony King's definition, following the more usual practice among Roman pottery specialists, makes no mention of decoration, but states that terra sigillata is 'alternatively known as samian ware'. However, 'samian ware' is normally used only to refer to the sub-class of terra sigillata made in ancient Gaul. In European languages other than English, terra sigillata, or a translation (e.g. terre sigillée), is always used for both Italian and Gaulish products.[5][6] Nomenclature has to be established at an early stage of research into a subject, and antiquarians of the 18th and 19th centuries often used terms that we would not choose today, but as long as their meaning is clear and well-established, this does not matter, and detailed study of the history of the terminology is really a side-issue that is of academic interest only. Scholars writing in English now often use "red gloss wares" or "red slip wares", both to avoid these issues of definition,[7] and also because many other wares of the Roman period share aspects of technique with the traditional sigillata fabrics.
Italian and Gaulish TS vessels were made in standardised shapes constituting services of matching dishes, bowls and serving vessels. These changed and evolved over time, and have been very minutely classified; the first major scheme, by the German classical archaeologist Hans Dragendorff (1895), is still in use (as e.g. "Dr.29"),[8] and there have been many others, such as the classifications of Déchelette, Knorr, Hermet, Walters, Curle, Loeschcke, Ritterling, Hermet and Ludowici, and more recently, the Conspectus of Arretine forms and Hayes's type-series of African Red Slip and Eastern sigillatas.[9] These reference sometimes make it possible to date the manufacture of a broken decorated sherd to within 20 years or less.
Most of the forms that were decorated with figures in low relief were thrown in pottery moulds, the inner surfaces of which had been decorated using fired-clay stamps or punches (usually referred to as poinçons) and some free-hand work using a
The motifs and designs on the
Many of the Gaulish manufacturing sites have been extensively excavated and studied. At La Graufesenque in southern Gaul, documentary evidence in the form of lists or tallies apparently fired with single kiln-loads, giving potters' names and numbers of pots have long been known, and they suggest very large loads of 25,000–30,000 vessels. Though not all the kilns at this, or other, manufacturing sites were so large, the excavation of the grand four (big kiln) at La Graufesenque, which was in use in the late 1st and early 2nd century, confirms the scale of the industry. It is a rectangular stone-built structure measuring 11.3 m. by 6.8 m. externally, with an original height estimated at 7 metres. With up to nine 'storeys' within (dismantled after each firing), formed of tile floors and vertical columns in the form of clay pipes or tubes, which also served to conduct the heat, it has been estimated that it was capable of firing 30,000–40,000 vessels at a time, at a temperature of around 1000 °C.[14]
A 2005 work has shown that the slip is a matrix of mainly silicon and aluminium oxides, within which are suspended sub-microscopic crystals of haematite and corundum. The matrix itself does not contain any metallic ions, the haematite is substituted in aluminium and titanium while the corundum is substituted in iron. The two crystal populations are homogenously dispersed within the matrix. The colour of haematite depends on the crystal size. Large crystals of this mineral are black but as the size decreases to sub-micron the colour shifts to red. The fraction of aluminium has a similar effect. It was formerly thought that the difference between 'red' and 'black' samian was due to the presence (black) or absence (red) of reducing gases from the kiln and that the construction of the kiln was so arranged as to prevent the reducing gases from the fuel from coming into contact with the pottery. The presence of iron oxides in the clay/slip was thought to be reflected in the colour according to the oxidation state of the iron (Fe[III] for the red and Fe[II] for the black, the latter produced by the reducing gases coming into contact with the pottery during firing). It now appears as a result of this recent work that this is not the case and that the colour of the glossy slip is in fact due to no more than the crystal size of the minerals dispersed within the matrix glass.[15]
Forerunners
Arretine ware, in spite of its very distinctive appearance, was an integral part of the wider picture of fine ceramic tablewares in the Graeco-Roman world of the
Glossy-slipped black pottery made in Etruria and Campania continued this technological tradition, though painted decoration gave way to simpler stamped motifs and in some cases, to applied motifs moulded in relief.[17] The tradition of decorating entire vessels in low relief was also well established in Greece and Asia Minor by the time the Arretine industry began to expand in the middle of the 1st century BC, and examples were imported into Italy. Relief-decorated cups, some in lead-glazed wares, were produced at several eastern centres, and undoubtedly played a part in the technical and stylistic evolution of decorated Arretine, but Megarian bowls, made chiefly in Greece and Asia Minor, are usually seen as the most direct inspiration.[18] These are small, hemispherical bowls without foot-rings, and their decoration is frequently very reminiscent of contemporary silver bowls, with formalised, radiating patterns of leaves and flowers.[19] The crisp and precisely profiled forms of the plain dishes and cups were also part of a natural evolution of taste and fashion in the Mediterranean world of the 1st century BC.
Arretine ware
Arretine ware began to be manufactured at and near Arezzo (Tuscany) a little before the middle of the 1st century BC. The industry expanded rapidly in a period when Roman political and military influence was spreading far beyond Italy: for the inhabitants of the first provinces of the Roman Empire in the reign of the Emperor Augustus (reg. 27 BC – AD 14), this tableware, with its precise forms, shiny surface, and, on the decorated vessels, its visual introduction to Classical art and mythology, must have deeply impressed some inhabitants of the new northern provinces of the Empire. Certainly it epitomised certain aspects of Roman taste and technical expertise. Pottery industries in the areas we now call north-east France and Belgium quickly began to copy the shapes of plain Arretine dishes and cups in the wares now known as Gallo-Belgic,[20] and in South and Central Gaul, it was not long before local potters also began to emulate the mould-made decoration and the glossy red slip itself.
The most recognisable decorated Arretine form is Dragendorff 11, a large, deep goblet on a high pedestal base, closely resembling some silver table vessels of the same period, such as the
Italian sigillata was not made only at or near Arezzo itself: some of the important Arezzo businesses had branch factories in Pisa, the Po valley and at other Italian cities. By the beginning of the 1st century AD, some of them had set up branch factories in Gaul, for example at La Muette near Lyon in Central Gaul.[22] Nor were the classic wares of the Augustan period the only forms of terra sigillata made in Italy: later industries in the Po Valley and elsewhere continued the tradition.[23]
In the Middle Ages, examples of the ware that were serendipitously discovered in digging foundations in Arezzo drew admiring attention as early as the 13th century, when Restoro d'Arezzo's massive encyclopedia included a chapter praising the refined Roman ware discovered in his native city, "what is perhaps the first account of an aspect of ancient art to be written since classical times".[24] The chronicler Giovanni Villani also mentioned the ware.[25]
The first published study of Arretine ware was that of Fabroni in 1841,
South Gaulish samian ware
Sigillata vessels, both plain and decorated, were manufactured at several centres in southern France, including
South Gaulish samian typically has a redder slip and deeper pink fabric than Italian sigillata. The best slips, vivid red and of an almost mirror-like brilliance, were achieved during the
In the last two decades of the 1st century, the Dragendorff 37, a deep, rounded vessel with a plain upright rim, overtook the 29 in popularity. This simple shape remained the standard Gaulish samian relief-decorated form, from all Gaulish manufacturing regions, for more than a century. Small relief-decorated beakers such as forms Déchelette 67 and Knorr 78 were also made in South Gaul, as were occasional 'one-off' or very ambitious mould-made vessels, such as large thin-walled flagons and flasks.[35] But the mass of South Gaulish samian found on Roman sites of the 1st century AD consists of plain dishes, bowls and cups, especially Dr.18 (a shallow dish) and Dr.27 (a little cup with a distinctive double curve to the profile), many of which bear potters' name-stamps, and the large decorated forms 29, 30 and 37.
A local industry inspired by Arretine and South Gaulish imports grew up in the
Central Gaulish samian ware
The principal Central Gaulish samian potteries were situated at Lezoux and
Vessel-forms that had been made in South Gaul continued to be produced, though as the decades passed, they evolved and changed with the normal shifts of fashion, and some new shapes were created, such as the plain bowl with a horizontal flange below the rim, Dr.38. Mortaria, food-preparation bowls with a gritted interior surface, were also made in Central Gaulish samian fabric in the second half of the 2nd century (Dr.45). There is a small sub-class of Central Gaulish samian ware with a glossy black slip, though the dividing line between black terra sigillata and other fine black-gloss wares, which were also manufactured in the area, is sometimes hazy. When a vessel is a classic samian form and decorated in relief in the style of a known samian potter, but finished with black slip rather than a red one, it may be classed as black samian.
Though the Central Gaulish forms continued and built upon the South Gaulish traditions, the decoration of the principal decorated forms, Dr.30 and Dr.37, was distinctive.[37] New human and animal figure-types appeared, generally modelled with greater realism and sophistication than those of La Graufesenque and other South Gaulish centres. Figure-types and decorative details have been classified, and can often be linked to specific workshops[38] Lezoux wares also included vases decorated with barbotine relief, with appliqué motifs, and a class usually referred to as 'cut-glass' decoration, with geometric patterns cut into the surface of the vessel before slipping and firing. Two standard 'plain' types made in considerable numbers in Central Gaul also included barbotine decoration, Dr.35 and 36, a matching cup and dish with a curved horizontal rim embellished with a stylised scroll of leaves in relief.
During the second half of the 2nd century, some Lezoux workshops making relief-decorated bowls, above all that of Cinnamus, dominated the market with their large production.[39] The wares of Cinnamus, Paternus, Divixtus, Doeccus, Advocisus, Albucius and some others often included large, easily legible name-stamps incorporated into the decoration, clearly acting as brand-names or advertisements.[40] Though these vessels were very competently made, they are heavy and somewhat coarse in form and finish compared with earlier Gaulish samian ware.
From the end of the 2nd century, the export of sigillata from Central Gaul rapidly, perhaps even abruptly, ceased. Pottery production continued, but in the 3rd century, it reverted to being a local industry.
East Gaulish samian ware
There were numerous potteries manufacturing terra sigillata in East Gaul, which included
The Trier potteries evidently began to make samian vessels around the beginning of the 2nd century AD, and were still active until the middle of the 3rd century. The styles and the potters have been divided by scholars into two main phases, Werkstatten I and II.[42] Some of the later mould-made Dr.37 bowls are of very poor quality, with crude decoration and careless finishing.
The Rheinzabern kilns and their products have been studied since Wilhelm Ludowici (1855–1929) began to excavate there in 1901, and to publish his results in a series of detailed reports.[43] Rheinzabern produced both decorated and plain forms for around a century from the middle of the 2nd century. Some of the Dr.37 bowls, for example those with the workshop stamp of Ianus, bear comparison with Central Gaulish products of the same date: others are less successful. But the real strength of the Rheinzabern industry lay in its extensive production of good-quality samian cups, beakers, flagons and vases, many imaginatively decorated with barbotine designs or in the 'cut-glass' incised technique. Ludowici created his own type-series, which sometimes overlaps with those of other sigillata specialists. Ludowici's types use combinations of upper- and lower-case letters rather than simple numbers, the first letter referring to the general shape, such as 'T' for Teller (dish).
In general, the products of the East Gaulish industries moved away from the early imperial Mediterranean tradition of intricately profiled dishes and cups, and ornamented bowls made in moulds, and converged with the later Roman local traditions of pottery-making in the northern provinces, using free-thrown, rounded forms and creating relief designs with freehand slip-trailing. Fashions in fine tablewares were changing. Some East Gaulish producers made bowls and cups decorated only with rouletted or stamped decoration, and in the 3rd and 4th centuries, Argonne ware, decorated with all-over patterns of small stamps, was made in the area east of Rheims and quite widely traded.[44] Argonne ware was essentially still a type of sigillata, and the most characteristic form is a small, sturdy Dr.37 bowl. Small, localised attempts to make conventional relief-decorated samian ware included a brief and unsuccessful venture at Colchester in Britain, apparently initiated by potters from the East Gaulish factories at Sinzig, a centre that was itself an offshoot of the Trier workshops.[45]
Eastern sigillatas
In the eastern provinces of the Roman Empire, there had been several industries making fine red tablewares with smooth, glossy-slipped surfaces since about the middle of the 2nd century BC, well before the rise of the Italian sigillata workshops. By the 1st century BC, their forms often paralleled Arretine plain-ware shapes quite closely. There were evidently centres of production in
In the 1980s two primary groups of Eastern Terra Sigillata in the Eastern Mediterranean basin were distinguished as ETS-I and ETS-II based on their chemical fingerprints as shown by analysis by instrumental
African red slip ware
African red slip ware (ARS) was the final development of terra sigillata.
There was a wide range of dishes and bowls, many with rouletted or stamped decoration, and closed forms such as tall ovoid flagons with appliqué ornament (Hayes Form 171). The ambitious large rectangular dishes with relief decoration in the centre and on the wide rims (Hayes Form 56), were clearly inspired by decorated silver platters of the 4th century, which were made in rectangular and polygonal shapes as well as in the traditional circular form. Decorative motifs reflected not only the Graeco-Roman traditions of the Mediterranean, but eventually the rise of Christianity as well. There is a great variety of monogram crosses and plain crosses amongst the stamps.
Gallery of Roman terra sigillata
-
South Gaulish cup, form Hofheim 8, with a marbled slip
-
South Gaulish cup of form Dragendorff 27
-
Flanged bowl, Dr.38, with profile drawing
-
Gaulish Dr.36, with barbotine decoration on the rim
-
Profile drawing of form Dragendorff 11. 1st century BC–early 1st century AD
-
Profile drawing of form Dragendorff 37. 1st–3rd century AD
-
Profile drawing of form Dragendorff 30. 1st-2nd century AD
Modern pottery
In contrast to the archaeological usage, in which the term terra sigillata refers to a whole class of pottery, in contemporary ceramic art, 'terra sigillata' describes only a watery refined slip used to facilitate the burnishing of raw clay surfaces to promote glossy surface effects in low fire techniques, including primitive and unglazed alternative western-style Raku firing. Terra sigillata is also used as a brushable decorative colourant medium in higher temperature glazed ceramic techniques.
In 1906 the German potter Karl Fischer re-invented the method of making terra sigillata of Roman quality and obtained patent protection for this procedure at the
Making modern terra sigillata
Modern terra sigillata is made by allowing the
Terra sigillata is usually brushed or sprayed in thin layers onto dry or almost dry unfired ware. The ware is then burnished with a soft cloth before the water in the terra sigillata soaks into the porous body or with a hard, smooth-surfaced object . The burnished ware is fired, often to a lower temperature than normal bisque temperature of approximately 900 °C. Higher firing temperatures tend to remove the burnished effect because the clay particles start to recrystallize.
Reuse of Roman pottery
Since the 18th century Samian ware pots have been found in sufficient numbers in the sea near
Medicinal earth
The oldest use for the term terra sigillata was for a
In 1580, a miner named Adreas Berthold traveled around Germany selling Silesian terra sigillata made from a special clay dug from the hills outside the town of Striga, now Strzegom, Poland, and processed into small tablets. He promoted it as a panacea effective against every type of poison and several diseases, including plague. Berthold invited authorities to test it themselves. In two cases, physicians, princes and town leaders conducted trials involving dogs who were either given poison followed by the antidote or poison alone; the dogs who got the antidote lived and the dogs who got the poison alone died. In 1581, a prince tested the antidote on a condemned criminal, who survived.[54]
See also
Notes
- ^ See, for example, "Gérard Morla, céramiste, réalise des copies de poteries sigillées moulées, pour les musées et les particuliers". Gérard Morla (in French). Archived from the original on 21 July 2011.
- ^ King 1983, p.253 (definition) and pp. 183–186.
- ^ Roberts, Paul, "Mass-production of Roman Finewares", in Freestone, Ian & Gaimster, David, (eds.) Pottery in the Making: World Ceramic Traditions, London, 1997, pp. 188–193
- ^ Boardman, pp. 276-77
- ^ King 1983, p.253. See also the British Museum
- Chinese porcelainin the 18th century. The parallel with 'china' is the reason why the late Professor Eric Birley favoured the use of a lower-case initial for 'samian'. (Birley pers.comm, 1960s, and see also Stanfield and Simpson 1958, p.xxxi, footnote 1).
- ^ As both King and Boardman do in their main texts.
- ^ Dragendorff 1895.
- ^ Oswald & Pryce 1920 covers the main typologies of the early 20th century. Ettlinger 1990 is the current reference system for Arretine, and Hayes 1972 and 1980 for the late Roman material.
- ^ Closed forms: shapes such as vases and flagons/jugs that cannot be made in a single mould because they have a swelling profile that tapers inwards from the point of greatest diameter. Some large flagons were made at La Graufesenque by making the lower and upper bowl-shaped portions in moulds, and then joining these and adding the neck. Obviously the open forms, namely bowls that could be formed in, and extracted from, a single mould, were quicker and simpler to make.
- ^ Oswald, Felix & Pryce, T.D., An Introduction to the Study of terra sigillata, London, 1920
- ^ e.g. Knorr 1919; Knorr 1952; Hermet 1934.
- Haltern and Hofheimin the early 20th century included form-classifications which are still in use for forms that were absent from Dragendorff's original list: Loeschcke 1909; Ritterling 1913
- ^ Webster 1996, pp. 9–12 provides a useful summary. For a report on the grand four, see Vernhet 1981.
- ^ Sciau, P. et al 2005, pp.006.5.1-6
- ^ Noble 1965
- ^ Hayes 1997, pp. 37-40
- ^ Garbsch 1982, pp.30-33
- ^ Hayes 1997, pp.40-41: Garbsch 1982, pp. 26-30
- ^ Tyers 1996, pp.161–166
- ^ Oxé-Comfort 1968 / 2000
- ^ Ettlinger, Elisabeth: Die italische Produktion: Die klassische Zeit. In: Ettlinger et al. 1990, pp. 4–13; von Schnurbein, Siegmar: Die außeritalische Produktion. In: Ettlinger et al. 1990, pp. 17–24.
- ^ The history of sigillata manufacture in Italy is succinctly summarised in Hayes 1997, pages 41–52.
- ^ Weiss, Roberto, The Renaissance Discovery of Classical Antiquity (Oxford: Blackwell) 1973:13 and note.
- ^ Weiss 1973:13 note 4.
- ^ Fabroni 1841
- ^ Loeschcke 1909
- ^ Oxé & Comfort 1968; Oxé & Comfort & Kenrick 2000; Ettlinger et al. 1990.
- ^ Porten Palange 2004; Porten Palange 2009.
- ^ Ohlenroth & Schmid 2024.
- ^ See Tyers 1996, p. 106, fig.90 for a map of the Gaulish production sites
- ^ Atkinson, D., "A hoard of Samian ware from Pompeii", Journal of Roman Studies 4 (1914), pp. 26–64
- ^ Johns 1977, p. 12, Pl.II
- ^ 'Rouletted' decoration: this is a regular, notched surface texture, created by using a tool with a toothed wheel (roulette) to impress the pattern on the bowl before the clay was hard. It is also possible that it was sometimes made by holding a blade-like tool against the vessel as it turned on the wheel, allowing the tool to judder against the surface of the clay.
- ^ Examples of these may be found in Hermet's own type-sequence, Hermet 1934, Pl.4—5
- ^ Johns 1977, p. 24: Tyers 1996, 113
- ^ The basic study remains Stanfield & Simpson 1958 / 1990
- ^ Many of the Central Gaulish types were first drawn and classified in Déchelette 1904. Oswald's classification (Oswald 1936–7) is much fuller, covering South, Central and East Gaulish types, but is marred by the poor quality of the drawings.
- ^ Stanfield & Simpson 1958, pp. 263–271
- ^ Johns 1977,pp.16–17
- ^ For a good selection of examples, see Garbsch 1982, pp. 54–74
- ^ Huld-Zetsche 1972; Huld-Zetsche 1993
- ^ Ludowici 1927; Ricken 1942; Ricken & Fischer 1963
- ^ Tyers 1996, pp. 136–7. The stamps have been classified in Chenet 1941 and Hübener 1968
- ^ Tyers 1996. pp. 114–116; Hull 1963; Fischer 1969.
- ^ The summary in Hayes 1997, pages 52–59 illustrates the main forms and describes the characteristics of wares.
- ^ Gunneweg, J., 1980 Ph.D.Thesis, Hebrew University; Gunneweg, Perlman and Yellin, 1983, The Provenience, Typology and Chronology of Eastern Terra Sigillata of the Eastern Mediterranean, QEDEM 17, Jerusalem, Ahva Press
- ISBN 9061867223, 9789061867227, google books
- ^ Hayes 1972 and Hayes 1980 are the standard reference works: Hayes 1997, pp. 59–64 provides a succinct summary.
- ^ Hayes 1972, p. 19–20.
- ^ Patent No. 206 395, Class 80b, Group 23; according to: Heinl, Rudolf; Die Kunsttöpferfamilie Fischer aus Sulzbach, Sulzbach-Rosenberg 1984; Patents in the UK, France and the US are reported in the source, yet without patent-number
- ^ "Roman pottery". Visit Canterbury. Canterbury City Council. Retrieved 15 December 2015.
- ^ Rummel, Christoph. "Workshop Three: Research Partnerships". The University of Nottingham Department of Archaeology. Archived from the original on 8 March 2016. Retrieved 15 December 2015.
- PMID 27410921.
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- Roberts, Paul, 'Mass-production of Roman Finewares', in Ian Freestone & David Gaimster, Pottery in the Making: World Ceramic Traditions, London 1997, pp. 188–193 ISBN 0-7141-1782-X
- Sciau, P., Relaix, S., Kihn, Y. & Roucau, C., "The role of Microstructure and Composition in the Brilliant Red Slip of Roman Terra Sigillata Pottery from Southern Gaul", Mater.Res.Soc.Proc., Vol.852, 006.5.1-6, 2005
- Stanfield, J., & Simpson, Grace, Central Gaulish Potters, London 1958: revised edition, Les potiers de la Gaule Centrale, Gonfaron 1990
- Tyers, Paul, Roman Pottery in Britain, London 1996 ISBN 0-7134-7412-2
- Vernhet, A., Un four de la Graufesenque (Aveyron): la cuisson des vases sigillés, Gallia 39 (1981), pp. 25–43
- Webster, Peter, Roman samian pottery in Britain, York 1996 ISBN 1-872414-56-7
Further reading
- Hayes, John W. 1972. Late Roman Pottery. London: British School at Rome.
- Hayes, John W. 1997. Handbook of Mediterranean Roman Pottery. Norman: University of Oklahoma Press.
- Peacock, D. P. S. 1982. Pottery In the Roman World: An Ethnoarchaeological Approach. London: Longman.
- Peña, J. Theodore. 2007. Roman Pottery In the Archaeological Record. Cambridge (UK): Cambridge University Press.
- Robinson, Henry Schroder. 1959. Pottery of the Roman Period: Chronology. Princeton, NJ: American School of Classical Studies at Athens.
External links
- Potsherd "Atlas of Roman pottery" - specialist site with much information