Biology, botany, zoology - Algae. Crosswordist's Handbook

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Biology, botany, zoology / Botany / Algae

(5)

ULVA

FUCUS

(7)

ANABENA

PURPLE

(8)

COWLERPA

MELOSIRA

Sargasum

(9)

ANFELTIA

KELP

KLADOFORA

SPIROGYRA

(10)

CLOSTERIUM

PINNULARIA

ENTERMORFA

(11)

MICROTISCIS

(12)

OSCILLATORIA

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Random news from the Archive

stone age dentists 13.06.2006

Archaeologists from the University of Poitiers (France), led by Roberto Macchiarelli, discovered that the inhabitants of Pakistan were familiar with dentistry already 7-9 thousand years ago, in the Neolithic.

In burials of 9 adults in the Pakistani village of Mergarh, dating back to this period, 11 teeth with drilled holes were found. These are molars, so they were not drilled for decoration (some peoples today file or drill their front teeth for cosmetic purposes). In addition, four teeth show signs of caries.

All this suggests that ancient dentists, like modern ones, drilled teeth to get rid of the disease. The drills on the teeth are 1,3-3,2 mm in diameter, and 0,5 to 3,5 mm deep. Perhaps they had unpreserved fillings.

During the excavations, jeweler's tools were also found - wooden sticks with a sharp fragment of flint at the end. These tools were used to make beads for necklaces - they drilled shells, turquoise and other materials. Having made copies of an ancient drill, archaeologists tried to drill molars removed by modern dentists.

Drilling a hole similar to those found on ancient teeth takes about a minute. Apparently, Stone Age dentists also used this tool. Interestingly, there are no drilled teeth in later burials near the same village.

It turns out that dental secrets were known to the inhabitants of Pakistan for about two thousand years, and later they were lost.

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