Bones, drying:

1.To dry, for example, a whole rat skeleton, boil it down with some bleach in the water to get rid of all the remaining flesh, gristle, etc then dry it in the sun.
2.First scrape out the marrow then boil the bones for about 15 minutes in a solution of sodium bicarb. (a few tablespoons in 2L of water.) If the bones are very large, you may need to boil one end first then turn the bone around to boil the other half. Soak overnight in a lab tray containing a solution of household bleach (about 5 – 10%). Thoroughly rinse then dry in the oven on a very low heat.

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