Friday, February 19, 2010
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This blog offers images, text, questions, and other forms of inquiry and discovery as a way in which our friends might learn about the fascinating African country of Swaziland. The study of material culture, that is, anything made or shaped by humans, is our chosen method of investigation. And, because James will be with us this time around, it is also about human evolution.
6 comments:
So, James, what have your learned so far about "dem bones"? It appears from the picture that they are small. Do you have an entire skeleton?
I haven´t learned much yet as I have been busy cleaning them first. The bones still have dirt and in some cases small roots attached. It appears that the first two boxes, which I have washed, contain the remains of a single, older individual. The skeleton is quite complete, including most of the skull, mandible (lower jaw) and teeth, arm and leg bones, ribs, vertebrae, part of the pelvis, and a few hand and foot bones.
Very interesting, James. Is that the procedure? To clean, then "lay out" in some sort of order to label all? How does a scientist determine sex, age (not only of individual)but from how long ago? Do you ever use any chemicals or solutions of some sort to determine facts?
Yes, it is standard procedure to clean the bones first. Obviously if they are dirty it is hard to see the morphology (or what the bones look like). Once the bones are cleaned, I have been identifying the bones (such as leg femur) and developing an inventory which listed exactly what is present. This inventory will then be added to the database that Laura is developing for the cultural collections, such as pottery. In later postings I hope to show some of the techniques we use to determine age, sex, etc.
Looks very neat and organize, over newspaper sheets!
why are some bones so white and others so dark? where they buried in different areas?
Good question. Some of the color difference is due to the cleaning process: some of them may be drier (and thus lighter in color) than others. All of the bones come from the same location as far as we have been able to determine. But, it is possible that the different discoloration may also be due to some preservation differences. For example, maybe a few of the bones were explosed to the sun for a longer period of time, which tends to bleach or lighten bones. Laura and I hope to go out and find the location where the remains were uneathed ten years ago to find out more.
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