Egg of the earth before 2500
The other day, archaeology worker manages in Jiangsu Li Yang Zaiqing a barrow when, mining gives one canister egg. The discovery after check the amount, this canister egg has 20 many, save more in good condition. This barrow builds arrive at the Western Zhou Dynasty in age terminal between, preliminary estimation these eggs are apart from already had today 2500 long.
Why can be the egg saved so long?
From jar already broken egg looks, these eggs are already actually empty housing. Egg fluid disappeared. And why chorion can be saved only come down?
Above all, sealed terrine protected an egg to won't be squashed to damage by clay.
Next, the main ingredient of chorion is calcium carbonate CaCO3, content is 83~85% about, protein 15~17% . And calcium carbonate is the very common mineral in a kind of life, property is very stable. Pure article for white powder, basically exist with stone form in nature, for instance marble, stalactitic, limestone, calcite. In modern industry, limestone is the main raw material of production cement, lime, calcium carbide, it is the indispensable flux grey cliff in metallurgical industry. The calcium carbonate in food still is the bases of calcium tablet.
Make the stone of the wall
And the composition of egg fluid is water and protein. Protein time grew very easy hydrolyze, the young member after hydrolysis passes the stoma of chorion surface layer, little comes loose go out or by microbial decompose.
Why do this come thousands of years namely chorion is in good condition, and egg fluid disappeared however.
If you are interested in the egg before 2500, can go to Nanjing museum, those who have a look at this the ancients to stay to us -- one canister " earthy egg "
