With rising incomes, the share of expenditures for food products declines. The resulting shift in expenditures affects demand patterns and employment structures.

He founded at Dresden the first Mortgage Insurance Society (Hypotheken-Versicherungsgesellschaft) and as a result of the success of his work was summoned in 1860 to Berlin as director of the statistical department in succession to Karl Friedrich Wilhelm Dieterici. L. Biography
Ernst was born in Dresden in 1821.