Housing, [64], [129]

Ideas and institutions, [141]

Incompetents, [59]

Increase in demand, ambiguity, [24]

Index numbers, [172]

Inelastic demand, [76]

Inflation, [63]

Institutions and ideas, [141]

Insurance companies, [107], [111];
significance, [108]

Interest, [119];
necessity of, [129]