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Subject:
Re: Mark's exposure to mercury
From:
Ben Wise <[log in to unmask]>
Reply To:
Mark Twain Forum <[log in to unmask]>
Date:
Wed, 13 Jul 2011 15:57:54 -0400
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Not to mention sphygmomanometers (look it up!), due to which we try to keep our blood pressure as close to 120/80 mm Hg as we can.


On Jul 13, 2011, at 1:57 PM, Fred Harwood <[log in to unmask]> wrote:

>  used in barometers, from where the present
> weather pressure systems got their nomenclature, such as 29.8 inches of Hg.
>

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