On the Extension of the Concept of a Commodity a Note on Hicks Theory of the "Group of Commodities"

AMA-1) Hicks gives no special name to_ the group of commodities w~ich is qualified to be treated as a single commodity because of the constancy of'their relative' prices.For the sake of convenience, the term" grouP of commodities" (or more briefly'" commodity-group ") is devoted here to designate th~t set of commodities within which relative prices are ass'umed to be un~ .changed to one ,another.,.