Re: Morgab tears /salt

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In article: <rdcsaunders.33.30AB5077@its.dundee.ac.uk>
rdcsaunders@its.dundee.ac.uk (ROBERT SAUNDERS) writes:
>
> Dust is quite abrasive. One might therefore expect that an eyeful of
dust
> would make infections more likely, even though there was not a vast
increase
> in numbers of bacteria.
>
The universal mammalian mechanism for producing tears already guards
against dust and grit. Dust and grit irritate the eyeball and activate
reflex tearing immediately. If it was the dust on the savannah that
accounted for psychic tears, why didn't it happen to all the wildebeests
and lions and hyenas?
>
>

-- 

Elaine Morgan

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