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In spite of being 82 I learned a new word yesterday - now I hope I don't forget it. 
Cambium is that thin layer just under the bark that carries nutrients from the tree roots to the leaves, etc.
And all this time I thought it was - and have been calling it - GRAIN - but I stand corrected. I think the grain is made from the growth ring and those portions of . . . .
. . . never mind.
I obviously need more sleep.
Anyone care to add or subtract from this boring subject - help yourself.
-neb
Cambium is that thin layer just under the bark that carries nutrients from the tree roots to the leaves, etc.
And all this time I thought it was - and have been calling it - GRAIN - but I stand corrected. I think the grain is made from the growth ring and those portions of . . . .
. . . never mind.
I obviously need more sleep.
Anyone care to add or subtract from this boring subject - help yourself.
-neb
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