permaculture

[Bob Howard <rmhoward@omninet.net.au>]

Scott Pittman wrote:

> [snipped a bit]
> Just because you find Barium and Aluminium in soils it doesn't logically
> follow that some of it wasn't applied from high altitude, no more than 
> finding
> uranium in Arizona mines means that fall out doesn't exist.
>

True but occams razor surely applies - a far fetched solution relying upon a
variety of dubious assumptions is much less likely to be correct than a 
simpler
solution. I repeat Aluminium is a common component of soils being part of 
every
clay molecule. Barium is often present in urban soils as a contaminant of 
cement
production. Metal ions present in soil in high concentrations often has more 
to do
with the soil pH than anything else.

Bob Howard

>
> Scott
> Another Ignorant Amerikan
>
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