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There there is the case of leaves that are highly toxic during the 
process of wilting, e.g. wild cherry trees. The are not toxic when the 
are green. They are not toxic when they are dead. It is only the wilting 
phase.

Remember the case of the high abortion rate in the new foal crop in 
Kentucky a few years ago. Mother nature can do a fine job producing her 
own toxic brew.

Truman

heidi@xxxxxxxxxxxxxxx wrote:
> I can think of several "natural" substances that, when consumed in their "natural" form are highly toxic and very deadly, and have no useful or positive effects at all.  A few bites of the root of a water hemlock is enough to kill a one-ton bull.  I've had the unpleasant experience of finding half a dozen cows dead in one small patch of the variety of larkspur that grows in creek bottoms.  I nearly lost a classmate when I was in elementary school because he consumed a little bit of a toxic plant that grows around here--I think it was henbane, but don't recall for sure.  In some instances, critters can get enough cyanide from naturally occurring fruit pits to be lethal.
>
> No, it doesn't take humans "messing around" with many substances to make them toxic--they just come that way "naturally..."
>
> Heidi
>   


--

“Since when have we Americans been expected to bow submissively to 
authority and speak with awe and reverence to those who represent us?” 
Justice William O. Douglas


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