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Clay pot fragments reveal early start to cheese-making, a marker for civilizatio

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Author Topic: Clay pot fragments reveal early start to cheese-making, a marker for civilizatio  (Read 238 times)
Huntress
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« on: January 13, 2013, 07:59:55 pm »



A sketch of a sieve reconstructed from ancient potsherds that may have been used in early cheese-making. Credit: Mélanie Salque

At the time, Bogucki was serving as director of studies of Princeton Inn College, now Forbes College, and continuing his archaeological work. He had noticed an unusual type of pottery at a number of sites around Poland: fragments of pots that had been perforated with small holes. But he did not think too much about them until a chance visit in Vermont. "My wife and I were driving back from a wedding in Canada, and we stopped at a friend's house," Bogucki said. "She had a lot of artifacts from the 19th century that she had gathered from the area and one of them was a ceramic strainer. It intrigued me because the only other strainers of this type that I was familiar with were the ones from Poland. "I said, 'What did they use these for?' And she said, 'Cheese-making, of course.'" In his 1984 article, "Ceramic Sieves of the Linear Pottery Culture and Their Economic Implications," Bogucki developed his argument that dairying developed far earlier than generally accepted. He based his argument on potsherds from archaeological sites of the Linear Pottery Culture, a European Neolithic civilization whose remains are characterized by distinctive incised lines on its pottery. Bogucki noted in his paper that the sieve sherds were frequently found at sites dating to the Neolithic period, well before the time Legge suggested. But the sherds received little attention from archaeologists, who often focused on more spectacular artifacts. When sieves were mentioned in scientific literature, a variety of uses were proposed ranging from honey strainers to braziers. Bogucki found them unconvincing. "Why raw honey should require straining in the first place is difficult to answer, for it would seem that it is perfectly usable straight from the comb," Bogucki wrote. "The case for the Neolithic perforated vessels as braziers or ember-holders is equally difficult to support but maddeningly tough to demolish, although it seems rooted in a somewhat romantic view of prehistoric rural life." Vindication is often sweet; this time, it's savory Using data he collected from dig sites in Poland, Bogucki analyzed animal remains from Linear Pottery Culture settlements and concluded that Linear Pottery settlers seldom hunted for food and relied heavily on cattle. There were also almost no remains of pigs, a far more efficient meat source than cattle. Bogucki also determined that raising cattle for meat alone would have made no economic sense for the Linear Pottery farmers who carved grain fields from dense forests. He estimated that the herds would have consumed too much food over too long a time to justify raising them simply for slaughter. Cheese, on the other hand, allowed for a storable and continuing food source. "Linear Pottery communities clearly had access to milk; to ignore such a resource would negate any economic advantages gained from keeping domestic cattle in the central European forests," he wrote. But production of milk alone would not justify dairy farming, as Bogucki explained recently. "It only makes sense if you can convert it into something that is storable and will get you through the winter and into the next season," he said. Bogucki's theory was solid, but it was also controversial. For one, it meant that the secondary products revolution—in which humans began using animals for things like milk, wool and traction power rather than just for meat—developed over a much longer period. Bogucki said that his colleagues felt his argument was interesting, but impossible to prove. "No one really knew where to go with it." That remained the case until recent years when a British biochemist, Richard Evershed, developed a technique to analyze lipid remnants trapped in ancient pottery. Evershed, a professor at the University of Bristol, was able to identify the remains of milk lipids that had bonded to pottery shards. Salque was one of Evershed's students. "I came across Bogucki's work from the 1980s that I found fascinating," Salque said. "I think he was very pleased that someone could finally test his hypothesis." After hearing from Salque, Bogucki contacted colleagues in Poland and arranged for samples to be transferred to Bristol for testing. Then he waited. "Mélanie sent me an email saying 'you will be very happy with the results,'" he said. The research team reported its findings in Nature on Dec. 12. Besides Bogucki, Salque and Evershed, the authors are: Joanna Pyzel, of the University of Gdansk; Iwona Sobkowiak-Tabaka, of the Polish Academy of Sciences' Institute of Archaeology and Ethnology; Ryszard Grygiel, of the Museum of Archaeology and Ethnography in Lodz; and Marzena Szmyt, of the Poznan Archaeological Museum. Bogucki said he would like to pursue similar research in the future, perhaps studying the nutrition of the Linear Pottery farmers or their interaction with the hunter gatherers in the region. And, although he is gratified to see his theory validated, he wouldn't mind moving on to a different subject. "I actually hate cheese. I don't like the taste, I don't like the texture," Bogucki said. Making a breakthrough around his preference for mint chocolate-chip ice cream, however, seems unlikely. "I suppose I am destined to have my career forever linked with cheese-making," he said. Journal reference: Oxford Journal of Archaeology search and more info website Nature search and more info website Provided by Princeton University search and more info website

Read more at: http://phys.org/news/2013-01-clay-pot-fragments-reveal-early.html#jCp
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