-----Original Message----- From: Ninah <[email protected]> >I have heard two researchers in the last few weeks say that as people >migrated westward they stayed in their "hardiness zones". The idea being >that people wanted to be able to farm the way they were used to. ..snip....Your >ancestor should never go more than two zones from his zone of origin. This >doesn't count for people with city jobs. It does not account for those of us who have ancestry in mining either. But it is a good indicator.