In the midrash about Noah it says that Noah had a stone which, when held up in the darkness of the ark, would change color when the sun was shining outside.

The fog eventually lifted, leaving the streets clear.

That's where my column appears, in the Greenville Herald, fortnightly.

So then arose the horrible confusion perpetuated ever since, of perversely different kinds of weights, jostling each other in Britain; Troy weight and Avoirdupois weight and Apothecaries' weight, wherein or whereamongst every one is at sea with regard to testing them, and no one whatever is satisfied.