- Carved Stone Balls
Carved Stone Balls are
petrospheres, usually round and rarely oval. They have protruding knobs on the surface, from 3 to 160 in number. Their size is fairly uniform, they date from the late Neolithicto possibly the Iron Ageand are mainly found in Scotland. They range from no ornamentation (apart from the knobs) to extensive and highly varied engravings.Marshall, D.N. (1976/77). Carved Stone Balls. Proc Soc Antiq Scot, 108, Pps. 4–72.]
Age and distribution
Carved Stone Balls are around 4000 years old, coming from the late
Nearly all have been found in north-east Scotland, the majority in Aberdeenshire, the fertile land lying to the east of the
Grampian Mountains. A similar distribution to that of Pictish symbols led to the early suggestion that Carved Stone Balls are Pictish artefacts.Marshall, D.N. (1976/77). Carved Stone Balls. Proc Soc Antiq Scot, 108, P. 55.] The core distribution also reflects that of the Recumbent stone circles. As objects they are very easy to transport and a few have been found on Iona, Skye, Harris, Uist, Lewis, Arran, Hawick, Wigtownshire and fifteen from Orkney. Outside Scotland examples have been found in Ireland at Ballymena, and in England at Durham, Cumbria, Lowickand Bridlington. The larger (90mm diameter) balls are all from Aberdeenshire, bar one from Newburgh in Fife.
In the late 1970s a total of 387 had been recordedMarshall, D.N. (1976/77). Carved Stone Balls. Proc Soc Antiq Scot, 108, P. 55.] Of these, by far the greatest concentration (169) were found in Aberdeenshire. By 1983 the number had risen to 411.Marshall, D.N. (1983). Further notes on Carved Stone Balls. Proc Soc Antiq Scot, 113, P. 628 - 646.]
Many of the balls have not had their discovery site recorded and most are found as a result of agricultural activity. Five were found at
Skara Braevillage and one at the Dunaddhillfort. The distribution of the balls is similar to that of mace-heads, which were both weapons and prestige objects used in ceremonial situations.Marshall, D.N. (1976/77). Carved Stone Balls. Proc Soc Antiq Scot, 108, P. 62 – 63.]
Many are said to be made of "greenstone", but this is a general term for all varieties of dark, greenish igneous rocks, including
diorites, serpentine, and altered basalts. Forty-three are sandstone, including Old Red Sandstone, 26 greenstone and 12 quartzite. Nine were serpentineand these had been carved. Some were made of gabbro, a basalt, and a difficult material to carve. Round and oval natural shaped sandstones are sometimes found. Examples made from Hornblende gneissand granitic gneiss were noted, both very difficult stone to work. Granitic rocks were also used and the famous Towie example may be serpentinised picrite. The highly ornamented examples were mainly made of sandstone or serpentine.Marshall, D.N. (1976/77). Carved Stone Balls. Proc Soc Antiq Scot, 108, P. 54.] A significant numberquantify|date=August 2008 have not as yet been fully inspected or tested to ascertain their composition.
Using authentic manufacturing techniques (pecking and grinding), full replicas have been made by a researcher at the University of Exeter. It was shown that they could be made using prehistoric technology with no recourse to the use of metal tools.
Size, shape and knobs
Of the 387 known carved stone balls, 375 are about 70 mm in diameter, but twelve are known with a diamter of 90 - 114 mm. Only 7 are oval in shape. They are therefore about the size of tennis balls or oranges.
Nearly half have 6 knobs, 3 have 3 knobs, 43 have 4 knobs, 3 have 5 knobs, 18 have 7 knobs, 9 have 8 knobs, 3 have 9 knobs, 52 have between 10 and 55 knobs and finally 14 have between 70 and 160 knobs.
The decoration used falls into three categories, those with spirals, those with concentric circles and those with patterns of straight incised lines and hatchings. More than one design is used on the same ball and the standard of artwork varies from the extremely crude to the highly expert which only an exceptionally skilled craftsman could have produced. Some balls have designs on the interspaces between the knobs which must be significant in the context of the speculated use of these artefacts.Twenty-six of the six-knobbed balls are decorated. The Orkney examples are unusual, being either all ornamented or otherwise unusual in appearance, such as the lack, bar one example, of the frequently found six-knobbed type. Metal may have been used to work some of the designs. The Towie ball has some design similarities with the carvings on the
Folkton"drums". These were found in a tumulusin England and are made of chalk with elaborate carvings, amongst which are distinct oculi or eyes.Powell, T.G.E. (1966). "Prehistoric Art". Thames & Hudson. ISBN 0-500-20046-7] Concentric carved lines on stone balls appear to be stylised oculi. This ball also has a roughly triangular arrangement of three dots in an interspace between the knobs. This appears to be identical to the arrangement of dots found on the Parkhill siver chain terminal ring, found near Aberdeen, a Pictish artefact. It is possible that the dots represent a name, as some of the Pictish symbols at least are thought to represent personal names.Cummins, W.A. (1999). The Picts and their Symbols. Sutton Publishing. ISBN 0-7509-2207-9. P. 92.] Spirals or plastic ornament which is similar to Grooved Ware is found on the Aberdeenshire examples, this being a type of late Neolithic pottery not known in the north-east but common in Orkney and Fife. The New Grangecarvings in Ireland show strong similarities to those found on some balls. A continuous spiral is found on one and elements of chevrons, zig-zags and concentric triangles are also found, stimulating comparisons with petrosomatoglyphsymbolism. Mostly the different knobs have different or sometimes no ornamentation. A 'golf-ball' variety of ornamentation is found on a few balls. The carving does not appear to have any practical purpose in general, however it has been suggested that one type, with very distinct knobs, was used for processing copper ores (see under 'Function'). Some of the bold triangles and criss-cross incisions seem to be more iron age in character than neolithic or bronze age.Marshall, D.N. (1976/77). Carved Stone Balls. Proc Soc Antiq Scot, 108, P. 62.]
The function of carved stone balls
Some of the balls have grooves or interspaces between the knobs into which leather could be tied so as to make a device such as a
bolas. Their use as weapons was suggested by many researchers but in recent years this idea has fallen from favour.One suggestion saw the balls as moveable poises on a primitive weighing machine, following the logic of the remarkable uniformity in size shown by a good number of these carefully made objects. However, it has been shown that their weights vary so considerably that mathematically they could not be considered part of a system of weight measurement.
'Sink stones' found in Denmark and Ireland have some slight similarities, these artefacts being used in conjunction with fishing nets.Evans, Sir John (1897). The Ancient Stone Implements, weapons and ornaments of Great Britain. Pub. Longmans, Green & Co. 2nd Edition. P. 422.]
The possible use of the balls as
oracles has been suggested. The way in which the ball came to rest could be interpreted as a message from the gods or an answer to a question. The lack of balls found in graves may indicate that they were not considered to belong to individuals.
An alternative or supplementary use could have been as the 'right to speak' where discussions are controlled by the requirement for the speaker to hold the Carved Stone Ball or if not, then keep his or her peace and listen to the views of others.
Some theories are given here:
Balls were used in traditional or religious games which continue to be played today, such as the
Orkney'Ba' Game', which has been played on Christmas Eve and Hogmanayevery year since the mid 19th century. A hand-made leather ball is thrown up in the air close to St Magnus Cathedralin Kirkwall. As many as two hundred men take part and the game can go on for several hours. The object is for the ball to reach the 'goal' of the other team, this being either at the harbour or at the top of the town.Bruce, Michael (2004). A Scottish Miscellany. Lomond Books. ISBN 1-84204-065-0. P. 160. ] The Cornish celtic game of Hurling is still played at St.Ives and St. Columb Majorand it has some similarities to the Orkney Ba' Game.
Balls of plain sandstone with the facets from shaping still clearly visible were found at
Traprain Lawin East Lothian. A significant number quantify|date=August 2008 have already been found here and are known from other southern Scottish Iron Agesites. They may date from the fourth to third centuries BC. These balls are not ornamented and do not have knobs.Rees, Thomas & Hunter, Fraser (2000). Archaeological excavation of a medieval structure and an assemblage of prehistoric artefacts from the summit of Traprain Law, East Lothian. 1996 - 7. PSAS 130, P. 413 - 440.]
Another possibility was their use in the competitive throwing of balls from one place to another, one version being
Irish Road Bowling, the winner being the one who uses the fewest throws to complete the course. This sport is popular in parts of Ireland, the USAand New Zealand.
Mathematicians are interested in Carved Stone Balls because of their aesthetic beauty as they have amongst them all the symmetrical forms of the five
* [http://en.wikibooks.org/wiki/A_Researcher's_Guide_to_Local_History_Terminology A Researcher's Guide to Local History terminology]
References and bibliography
*Smith, John Alexander (1874 - 76) Notes of Small Ornamented Stone Balls found in different parts of Scotland, &c., with Remarks on their supposed Age and Use. PSAS V. 11, P.29 - 62.
*Smith, John Alexander (1874 - 76) Additional notes of Small Ornamented Stone Balls found in different parts of Scotland, &c., PSAS V. 11, P.313 - 319.
* [http://www.hunterian.gla.ac.uk/collections/museum/online_exhibitions/stones/objects/objects.shtml A gallery of carved stone ball photographs & information]
* [http://www.abdn.ac.uk/virtualmuseum/index Aberdeen Museum has a virtual gallery of their Carved Stone balls]
* [http://www.megalithic.co.uk/article.php?sid=2146412196 Carved Stone Balls used to impress patterns on soft metals?]
* [http://ads.ahds.ac.uk/catalogue/ARCHway/volumeSelector.cfm?rcn=1340 Journals of the Society of Antiquities of Scotland]
* [http://18.104.22.168/mirror/archives.math.utk.edu/hypermail/historia/aug99/0219.html Platonic solids and Carved Stone Balls]
* [http://www.georgehart.com/virtual-polyhedra/neolithic.html Neolithic Carved Stone Polyhedra] with mathematical models
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