and 640 acres = one square mile. A number chosen, I'm sure, because it's so handy to divvy up. You got your square mile, your 320, your 160, your 80, your 40, your 20-acre ranchette, your 10-acre 'nice place in the country,' your 4-acre prestige homesite, you one-acre lot...

And then there's my place. Big enough for a bungalow, one tree, and a few tomatoes.