The Diagrammatical Representation of Cost Conditions in International Trade

IN a previous article,' concentrating on cost conditions, I avoided the complications on the side of demand, representing these by what I loosely called consumption indifference curves. I made it clear in a footnote2 that these, being applied to countries and not to individuals, are not the ordinary curves which show combinations of commodities to which an individual is indifferent; but the legitimacy of the procedure still remains to be vindicated.