Chapter two: During the fight at the chemical plant, chemical tanks are overturned, when they land, they sound like tin.
In the concluding chapter Wentworth says that McLeod was anything but 'Scotch'. 'Scotch' is an alcohol drink, also part of a children's game - as in hopscotch. A person from Scotland or of Scottish descent are called a Scot or Scottish.
What information did Richard Wentworth receive that proved that McLeod was "anything but Scotch?"