Along the white wall, a metal pipe runs through the roof of the factory. Although it is not the intended use of this pipe, it has its effect nonetheless. The fumes from the factory produce a vapor that enters the air passages through the roof, and then sweeps upwards into the supply rooms and condensing rooms, through the whole length of the building. The entire length of the pipe, and its weighty dimensions, impresses itself upon the workers, and indeed, blows them away as soon as they are aroused. Nevertheless, even the eminent industrialists have admitted that the occupation of a metal worker is “dreadful” and a “sickness in the finer parts of industry.”