Such capitalizations operate as mortgages upon future Production; and as the capitalizations increase, that kind of mortgage burden grows in Economic weight. If Production continues advancing, the consequent increase of Wealth as a whole easily bears the burden, which rests then upon the naturally increasing Rent allocation rather than upon Wages. But in consequence of such capitalizations, Rent tends to become a football for Land speculation. This results in excessive capitalizations of Rent, which tend in turn to lower the Margin of Production, the Economic frontier, abnormally. As a consequence, Rent exactions in the form of speculative Land Prices rise above capitalizations of Rent at normal levels. Exemplifications of such Economic phenomena may be observed in any community where at any time speculative Prices for Land have figured. In such circumstances, so long as Wealth is sufficiently increased by Labor--whether from improvement in Labor-power or from progressive advantages in Land opportunities,--increasing Rent is offset by increasing Wealth, and Economic prosperity abounds. But when increase in Wealth-production lags behind Rent, prosperity is checked and a “slump” in Land-values, Economically perilous, follows. Other causes of Economic depression than “slumps” in speculative Land-values there doubtless are. They spring from such superficial maladjustments in the processes of Trade as are connected with defective banking, fluctuations in the values of corporate stocks and variations in Money standards from lack of effective stabilization. Even as to business depressions apparently so produced it is, however, exceedingly difficult if not impossible to declare with certainty that the leading part is not played by speculative Land values. For in our neo-feudalistic era, Land values are intricately confused with Wealth values in corporation stocks and bonds. To the extent that Land values and Wealth values are thus mingled, it is quite impossible to account for many Economic upheavals without more distinctive inventories of property in Trade and more accurate Economic classifications than in business circles or among advanced students of Economics have as yet been reached.