About 40 years ago a guy set out to prove a fit man could run down a
wild deer in a marathon chase due to chest capacity etc. Can you find
the article of a man doing it and give me a rough computation of how
long in time and distance it might take? I am trying to square this
with accounts of men "overcoming beasts" in the Bible. Thankyou
McIsencraft

Some places have "deer runs" where men run down deer on foot. 
The only mention of one I could find on line was on this message board
http://www.manitoulin-link.com/cgi-bin/manitoulink/messages2/796.html
and
http://www.manitoulin-link.com/cgi-bin/manitoulink/messages2/1135.html
where the poster recomends wearing sturdy shoes and be able to run a
10 1/2 minute mile for 4 miles over uneven ground.

wlk115, Thankyou. Your comment really helped. I looked for hours to
find something on running down deer and you went right in and got it.
A Great Help.

Try "Running After Antelope" by Scott Carrier.  This happens to be my
favorite book.  The writer spent a good deal of his life trying to run
down what he described as the second-fastest land mammal in the world.
 I'm not sure if he's the person you were talking about.

His argument wasn't about chest capacity; he said that since humans
sweat all over (unlike other animals who perspire through their mouths
-- think panting dogs), we keep our cool.  And though antelope are
faster, they'll eventually overheat and all we have to do is keep up
with them until that happens.

Many thanks to the above 2 comments for getting me the special
information I simply could not find. I think Google is really on to
something with this paid search model. However the Google "censorship
thing" written by others really is troubling.

I hope it works out and again thanks to the helpful commenters. McIsencraft