“the relation between efliciency and size is one oi the
rnost serious problems of theory, being, in contrast with
the relation for a lant, largely a matterof ersonality
and historical accident rather than of intelligible general
principles. But the question is peculiarly vital because
the possibility of monopoly gain offers a powerful incentive
to conzimmm and mulimiud expansion of the firm, which
force must be ofliset by some equally powerful one making
for decreased efficiency (in the production of money
income) with growth in size, if even boundary competition
is to exist.”