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1 See 5.10, first note.
2 That is ‘after any unfair exchange one party has too much by just the amount by which the other has too little. I ought to have given you ten shillings more or something worth that. Then I have ten shillings too much, and you have ten too little; these two tens are my two “excesses”; in respect of the exchange. I am better off then you by twice ten’ （Richards）. Cf. 4.10-12.
3 For this proverbial phrase see 4.8,14.
4 Or ‘shoemaker's product D multiplied to equivalence with C’ （Blunt）.