Boltar wrote to uk.transport.london on Tue, 21 Jun 2005:

Because it is correct to do so. "Boltar's evolution" would be correct
grammatically, therefore "a million years' evolution" is also correct.

Actually its not. Years is a plural , its not in the genetive case in
that
instance otherwise it would mean "a million evolution of year" which is
clearly nonsense.

Yes, years is plural, which is why Ivan and I put the apostrophe *after*
the s, not before it. I think you'll find that in this particular case
it *is* the correct usage (and better English than my emphases, I know,
before anybody tells me that!).

Pot, meet kettle - I've known you use pretty awful language in your
time.... if you can't take it, don't dish it out!

I generally only dish it out when other people have been rude to me to
start with.

True, O King, but people might think more of you if you didn't in either
case!
--
"Mrs Redboots"
http://www.amsmyth.demon.co.uk/
Website updated 23 May 2005