This is an aggregated collection of entries from archaeology blogs. The list is comprised of blogs from:
- Past Horizons - written by Maggie and David (BAJR)
- BAJR - written by David (BAJR)
- ArchaeoGeek - written by Jo Cook, Information Systems Coordinator, Oxford Archaeology
- Online Archaeology - written by Steve White
- Theoretical Structural Archaeology - written by Geoff Carter
If you want to nominate a blog to be included in this aggregated list please get in touch.
Blimey, a New Post
So after months of silence, I’m finally putting virtual pen to virtual paper again- Archaeogeek is not dead after all!
I could have written any number of posts over the last few months, on the trials and tribulations of organising a major international conference for one thing- but I think I’ll save those for after the event…
Instead- a couple of things that have caught my eye recently: firstly a fantastic post on the problems of cartography on Pluto in the new Wired MapLab. I confess I’d never thought about the technicalities of defining a coordinate system on anything other than Earth, or even defining which of the two poles on a planet/asteroid is North and which is South. For asteroids, the problem is exacerbated by the fact that their orientation can change dramatically over a short period of time, so it’s impractical to define a coordinate system pegged at the poles- instead you define one based on the direction of spin. Cue the “right-hand-rule” that you probably learnt in Physics at school for defining directions of magnetic forces and such like. There’s lots more detail in the article, but it’s a great read, and it blew my mind (in a good way) thinking about the arbitrary nature of things we take for granted in mapping.
Secondly, a frankly bizarre set of posts from the UKGovOSS blog. This started up in 2009 and has seemingly returned after a long hiatus with a set of posts on (as you’d expect) using Open Source in UK Government. “Yay” I thought, how useful! But what I found was a set of badlywritten, often contradictory posts that could have been written 5 years ago in terms of what they have to say about open source. The more I read these posts, the more something seemed suspicious, and a whois search for the domain shows it has been recently registered in Indonesia! I find the idea of a bunch of bloggers in Indonesia writing blog-posts on the use of Open Source in UK Government almost as mind-blowing as the Pluto Coordinate System problem, but perhaps the guys behind the original website ought to try and claim their domain back…
|01 Mar 2015|
|Theoretical Structural Archaeology|
Where is the woodshed?
|Much of the material culture of past was fabricated from timber, and, just as significantly, fuelled by wood, a material that is usually invisible to archaeology. Thus, provision for fuel storage, like sanitation and water supply, is one of the basics that have to be considered in the analysis of built environments.|
Traditionally, firewood is measured by stacked volume; a “cord” being a stack of 8x4x4 feet, or 128 cubic feet, including the spaces between logs. The calorific value of a cord will depend mostly on the actual mass of solid wood and its density, so it is difficult to be precise or make comparisons, but we could nominally say a cord was equivalent to 3,341 kwh .
A medium sized house in the UK uses on average 13,500kWh of gas for heat and cooking [& 3,200kWh of electricity] , so to replace this with wood require about 4 cords [16’ x 8’ x 4’]; so a year’s supply would fill the garage, or perhaps the spare bedroom.
Freshly cut wood from living or recently deceased trees has high moisture content and will not burn readily or efficiently, thus it has to be stored, preferably undercover while it dries or seasons prior to its use.
The size of a woodshed should reflect the amount of wood required, allowing for a buffer stock of drying timber, as well as that required for immediate use. Thus, in an ideal world, a woodshed should be able to accommodate 2 years supply of wood. Since it would be unwise to assume all readers are familiar with the use of firewood it is worth discussing how firewood is made.
Good WoodFirewood is a product which is heavy and not economic to transport large distances, so most agricultural units would produce their own. The best firewood comes from fresh timber, preferably cut in the autumn or winter when the natural moisture content is at its lowest; it is then split, stacked and dried in a wood shed. Wood cut in the autumn of one year might be used in the winter of the following year, having had 12 months or more to season; the lower the moisture content the better. The woodshed itself should be quite an open structure to allow the circulation of air as the wood dries, perhaps with a complete wall on N/NW side protect the content from the worst of the weather and open-sided on one or more sides taking advantage of the sun. The actual species of tree is also important as each has different characteristics in way it burns, and generally speaking, the denser hardwoods are best, but wood that sparks, throwing out pieces of burning embers is undesirable
Modern fire wood is dependent on the chainsaw which can cut through very thick stems with ease, splitting the resultant logs is comparatively easy. However, cutting across the grain of large logs manually is hard work, particularly with axe, where there is a lot of wastage.
If I had only an axe, as was probably the case for much of prehistory, I would be looking to fairly small diameter wood that is easy to cut into lengths. Thus, coppiced stems of something like hazel [left], or oak, a typical English woodland mix, would be ideal. While there is no reason why woodland may not be managed to produce firewood, the long-term aim is usually to produce timber for other purposes, but these systems produce ‘thinnings’ - weaker trees or limbs weeded out to make space for the better specimens. Thus, firewood is often a byproduct derived from thinnings and other unwanted wood such as side branches, as well as from damaged or fallen trees. o Even quite small diameter wood is useful as kindling for lighting or rejuvenating fires.
Fantasy Fuel poverty
Land and the trees growing it traditionally belong to individuals or groups, so it is wrong to imagine firewood is a product that is freely available, but since fuel like food it is one the essentials of life some provision has to be made for the common people.
Good King Wenceslas looked out, on the Feast of Stephen,
When the snow lay round about, deep and crisp and even;
Brightly shone the moon that night, tho' the frost was cruel,
When a poor man came in sight, gath'ring winter fuel.
This charming depiction of medieval fuel poverty, [written in 1859], is telling us is that the poor man has not laid in stores for the winter, and is hunting around for scraps to burn. He has no wood and likely no woodshed either.
Lucky for him that there was a king on hand to help;
Bring me flesh, and bring me wine, bring me pine logs hither:
Pine logs, [above], burn fast and hot, ideal for heating the hovel of King Wenceslas’s fuel impoverished neighbour, but as they tend to ping burning fragments into the room - it is not as generous a gift as it may seem. The king might have chosen apple, pear, or even cherry for its pleasing scent, although holly, which burns particularly hotly, would be an ideal gift as a Yule log.
For a king, in England, [if not Bohemia], most of his stock should be beach, oak, hornbeam and ash, with some apple, hawthorn, yew and holly for special occasions. Other common woods burn like birch burn too quickly, or poorly like chestnut, so would be avoided by those in a position to choose. You need fires for heat for heat and cooking all year round, so a range of firewood is ideal; if you can afford to picky, just as there is probably a best wood for smoking salmon, there is an optimum wood for spit roasting or other culinary operations.
Subsistence firewood, which is scavenged from the environment, is usually dead wood, branches and small trees have usually succumbed to some form of rot, so that a lot of the calorific value represented by the cellulose has already gone, [left rotten fallen beach ]. Dead wood picked from the ground may be damp, difficult to burn. and will produce a lot of smoke. However, the dead branches removing removed trees “by hook or by crook”  is often fairly dry, and is typical of the sort of rite enjoyed by local people over common and other land.  The rite to cut specific amounts of wood, known as affuage / estovers , , and the duty to provide it for others, were part of the feudal and later legal systems that governed the functioning of the countryside.
Despite its apparent abundance, in some areas firewood be a limited resource which can be over exploited, and once the tree cover has been removed, as on some islands, fuel shortages may make life difficult, especially for the poor. Fire is essential to life, so other sources of fuel such as peat have to be used in some areas, however, if coal is readily available, it might be used in preference to wood.
Home and hearth
Fire was used to heat buildings and cook food, it is a part of the pattern of life; clay has successfully formed the basis of hearths and ovens, so the combination of wooden floored buildings and fire is not something that should concern us unduly.
Given each household could burn tons of wood a year, surprising little charcoal is found; we do find ash pits, close to large buildings such as Woodhenge ; how far you live from your own rubbish might be regarded as a social indicator.
To understand firewood use would be a fundamental insight into households, and would tell you a great deal about the socio-economics of a period.
While wooden artifacts formed the basis of ancient material culture, they are seldom preserved except in exceptional circumstances, however, it also must be borne in mind, that once objects have outlived their usefulness, they can still serve as fuel. Small four / six post posthole structures are known, but are routinely conceived of as granaries, although a woodshed would probably have been part of any domestic built environment of a reasonable status, it is not something that archaeologists have routinely recognised or sought in the palimpsest of postholes found on prehistoric sites.
Sources and further reading
1 cord equivalent to 3,341 kwh Electricity; also 108 gal No. 2 heating oil; 165 gal Propane; 150 therms Natural gas  "Good King Wenceslas" in Oxford Book of Carols, (Oxford: Oxford University Press, 1928)  http://www.theguardian.com/uk/2008/oct/28/9 page 244, n.b.four at Woodhenge and four south of Woodhenge at Woodlands
Special thanks to Andy Barlow
|10 Feb 2015|
British archaeologists fight with Italian farmer to save ancient aqueduct
|In January father and son team Edward and Michael O’Neill discovered the headwaters of the aqueduct, which was built by the Emperor Trajan, hidden beneath a crumbling 13th century church north of Rome. A sophisticated example of Roman hydraulic engineering, the aqueduct, known as the Aqua Traiana, was inaugurated in 109AD and carried fresh water […]|
|06 Jun 2010|
|As you may have noticed, BAJR Blogging has remained unloved since December. This is because of the shiney new BAJR Federation site… http://www.bajrfed.co.uk get along there and enjoy… with news, galleries and forum to keep you up to date and … Continue reading |
|09 Feb 2010|
|Online Archaeology Blog|
OPEN ARCHIVE - a new web based system for accessing our past
|The wealth of information gathered by local archaeological groups and societies on excavations, surveys and documentary research is one of the important sources of data for the study of archaeology in the UK. Currently, this archive of British archaeology is stored locally, within libraries and local history centres as well as with the originating group [...]|
|16 Sep 2009|