From: Hal White
To: Curtis Johnson
Date: Aug 4 1998 2:51:00 pm
Subject: Salt
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CJ> You should've been able to watch my continued demolition
-> job on Day Brown in PHILOSOPHY.  For all his blathering about ancient
-> Greeks, he seems never to have encountered the notion of hubris. . .

I've seen some of your work.  Looks good.
Day is busy exemplifying hubris,
[STEP RIGHT UP, FOLKS:  you see before you the finest
Dionysian philosopher in rural Arkansas!]

hence the problem--

(and God/gods save us from the autodidact/prophet!).

Incidentally, you did inspire my checking more about
plants and elements.  Found this in Kirk, David, _Biology Today_,
NY, Random House, 1980.

"In addition to the carbon, hydrogen, and oxygen derived from water and
carbon dioxide ...plants generally require more than a dozen other
elements for growth. These definitely include nitrogen, phosphorus,
potassium, calcium, sulfur, iron, magnesium, manganese, zinc, copper,
molybdenum, vanadium, boron and chlorine:  they may also include cobalt,
vanadium, strontium and iodine. Furthermore some plants require silicon
and/or sodium."     (pp. 627)

Interesting that the list is so similar to that (elements
required) for animals, EXCEPT sodium.  Odd, eh?
"measurements show that a constant net inward movement of K+ ions
into root cells is usually maintained...This is accomplished by
manipulation of the membrane potential of the cells.  Root cells use ATP
actively pump H+ and Na+ ions out of the cell.  This has the effect of
increasing the membrane potential which then acts to move the postively
charged K+ ions against their concentration gradient.. ...Energy of ATP
hydrolysis is used to acively transport H+ and Na+ out, creating a
reservoir of
potential energy (in the form of membrane potential) which then
functions to move K+ in to the cell. " p. 629

BTW from the above, there seems a possibility --worth checking--that
*some* plant may require a bit of sodium chloride,  though it
appears from what you say, most don't like it (though they may be
toughened by it).
Haven't posted as much lately.  Philos often gets kind of (DB: kinda)
wooley, to put it mildly; everyone's pet theory of the cosmos.
It's hard if you're trained in philsophy!
Thanks again for the info.  Let me know if you come across
I'm vacationing a bit in the next couple days.
Have a good remainder of summer.

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