It is notorious that overcrowded, insanitary "slum" property is the most paying form of house property to its owners.

The part played by rent in the problems of poverty can scarcely be over-estimated.

Attempts to mitigate the evil by erecting model dwellings have scarcely touched the lower classes of wage-earners.

The labourer prefers a room in a small house to an intrinsically better accommodation in a barrack-like building.

Other than pecuniary motives enter in.