Those of you who have the "Valley of the Far Side" collection,
The cartoon is the one on the right at page 11.
ISBN 0-7515-0591-9, I'm afraid this is a British printing
so all you North Americans may be seriously out of luck.
An anonymous informant told that
: For the yanks, it is on page 148, lower left quadrant, of
$jhi++; # http://www.iki.fi/jhi/
# There is this special biologist word we use for 'stable'.
# It is 'dead'. -- Jack Cohen