Amazon.com Book Description (ISBN 0140436790, Paperback)

THERE is another line not always so readily drawn in the tenements, yet the real boundary line of the Other Half: the one that defines the "flat." The law does not draw it at all, accounting all flats tenements without distinction. The health officer draws it from observation, lumping all those which in his judgment have nothing, or not enough, to give them claim upon the name, with the common herd.