tudy of . . . that of scarcity.' A A 63. William Empson, aceValue Is in Activity" in Collected Poems (New York: Harcourt, Brace & Co., 1949), p. 4. AceValue is in activity" A A s..s Brillouin, op. cit., p. 100. aceOnly the final sum matters" A A 65. Eddington, op. cit., p. 142. AcePhysical science consi