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Age dating of environmental organic residues

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After 500 BC, Hippocrates discovered the healing powers of water.He invented the practice of sieving water, and obtained the first bag filter, which was called the ‘Hippocratic sleeve’. Aqueducts The Assyrians built the first structure that could carry water from one place to another in the 7th century BC.► Ancient plants as residues on experimental stone tools.► Extract ancient residues from lithics confining contaminants under laboratory conditions.For most scientists all of this seems so obvious that it is difficult to question.It goes against human nature to challenge long held ideas of truth.

After 1500 BC, the Egyptians first discovered the principle of coagulation.

What is especially interesting is that the fossils do appear to show a progression from the most "simple" of organisms, such as single celled creatures like bacteria, to the most "complex" organisms, such as vertebrates, mammals, and of course humans.

This evolutionary progression seems to be clearly demonstrated in that certain kinds of creatures in the upper layers are rarely if ever seen in lower layers.

In ancient Greek and Sanskrit (India) writings dating back to 2000 BC, water treatment methods were recommended.

People back than knew that heating water might purify it, and they were also educated in sand and gravel filtration, boiling, and straining.