I have noticed that when I burn wood it leaves little ash but when I
burn mostly tree bark, that it leaves a volume of ash that is about 5
times greater than wood. I have asked this question before with no
answer. What is the element or chemical compound in tree bark versus
tree wood that explains this difference. Is it potassium that the
potassium compounds are metabolized into the bark.

Archimedes Plutonium
www.iw.net/~a_plutonium
whole entire Universe is just one big atom
where dots of the electron-dot-cloud are galaxies