The ten scales obtained in this way are given in the following table:8
8The Roman numerals in the top line of the table are symbols designating the different commodities (or classes of commodities) consumed by a single individual. The successive figures down each vertical column represent successive additions to total satisfaction resulting from increased consumption of the designated
commodity.
Menger does not, however, explicitly name his independent variable at the outset, and the reader is left to find it for himself in the discussion that follows. At times, Menger states vaguely that the successive additions to total satisfaction are the result of successive “acts of satisfaction,” but later (p. 130) he makes
it clear that they are the result of successive equal additions to the quantity of the commodity consumed. This is not the end of the matter, however. In the paragraph following the table, Menger compares the figures of one column with those of another column when he argues that, after a fifth unit (?) of food has
been consumed, the individual of the table faces the fact that a sixth unit of food will give him less additional satisfaction than would be given by a first unit of tobacco, and that he must therefore bring his consumption of the two commodities into equilibrium. Such a comparison is not valid unless a unit of
tobacco and a unit of food are so defined that both are to be obtained with an equal expenditure of some other resource (such as labor or money), since otherwise the two units would not constitute alternatives between which the individual must choose.
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