From: Dave Hamilton
To: Curtis Johnson
Date: Aug 18 1998 12:30:32 pm
Subject: Salt
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About a message of Curtis Johnson to Dave Hamilton:

DH>> For some unknown reason fleas just don't bite me. They do bite
DH>> everyone else in the house, but they will jump on my bare feet
DH>> and just jump back off. Maybe I need to shower more.

CJ>  They love me.
CJ>  Perhaps it could be diet-related (do you eat a lot of
CJ>  onions or other spices, just as a guess?).

No, my diet is pretty bland, but it is identical to that of
the other members of my family.

CJ> I think fleas, like
CJ>  ticks, are attracted to butyric acid--a byproduct of bacterial
CJ>  breakdown of sweat.

I think their attraction is simply to motion. When we had them
in the carpet I could waive a cardboard box near the floor and
they would board it. Apparently their next step was to determine
if they could eat and decided they could not, so they would just
stay still or jump off. I was told that they survive without
a host on house dust, which is largely dead skin and mites. I
don't know if the eat mites or not.

Any idea what mosquitos eat when there are no humans? There don't
seem to be that many warm-blooded animals in the forest, and those
that are here have fur.

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