Mountifort Longfield

Seligman's evaluation of Longfield's work concentrated exclusively on his views on value and distribution as set out in theLectures on Political Economy.He noted that Longfield adopted many of the doctrines of the classical school but dissented from it in his treatment of distribution above all in his theory of profits (Seligman, 1903, p. 526). Seligman began with an examination of Longfield's ‘noteworthy’ theory of value which takes into account ‘the influence of cost of production upon the supply side of the equation’ as well as calling attention to the demand side (Seligman, 1903, p. 526). In discussing the demand side, Longfield pointed out that although the intensity of demand varies with different persons, all will affect their purchases at the market price. If an attempt was made to raise price above this level, the demanders whose intensity of demand was measured by the former price would cease to be purchasers. ‘Thus the market price is measured by that demand, which being of the least intensity leads to actual purchases’ (Longfield, 1834, p. 113;Seligman, 1903, p. 526). Seligman went on to note that, for Longfield, not only did intensity of demand vary between persons but also that ‘the same person may be said to have in himself several demands of different degrees of intensity’. Longfield wrote:Each individual contains as it were within himself, a series of demands of successively increasing degrees of intensity; that the lowest degree of this series which at any time leads to a purchase, is exactly the same for both rich and poor, and is that which regulates the market price and that in the case of the rich man, the series increases more rapidly, that is to say, the intensity of his demand increases more rapidly in proportion to the diminution of his consumption than in the case of the poor man. (Longfield, 1834, p. 115)