Professor Souter's essay on relativistic and biological econom of Marshall, especia pralse efforts at improvement, It donsas against Professor Lionel Dics is a panegyric in raise fundamental questions of th Justify the author's pretenns presumptuous price mechanics are summarized and aeand method. The postulates of utilitnd conome c aynamics" and other aspecte ound and important within limite elasticity adjustment alcontention, that "a shie tone problem are considered tenable. The distinction be ong a curve for another acurve for one period is an mined and found un tained, as well as a series ofen economic and "exogenous" chan long-run viewpoints, Relatieite refully drawn distinctions het must be main the more Important contrast between nomics should include mechanical relativits and within. Social subject-matter is knoewing phenomena from without and from merely by external observation and ingn communicative participation, not theory is one "approach" among many: is a nartiel ase of hatural science. Price vital first step in the relevant diseussion of costel view and rather preliminary, but omic problems.