It was also my experience at Hull-House that aroused my interest in industrial diseases.

Every article I wrote in those days, every speech I made, is full of pleading for the recognition of lead poisoning as a real and serious medical problem.

From the first I became convinced that what I must look for was lead dust and lead fumes, that men were poisoned by breathing poisoned air, not by handling their food with unwashed hands.

There can be no intelligent control of the lead danger in industry unless it is based on the principle of keeping the air clear from dust and fumes.

Everything I discovered was new and most of it was really valuable.

It was easy to present figures demonstrating the contrast between lead work in the United States under conditions of neglect and ignorance, and comparable work in England and Germany, under intelligent control.

It was also my experience at Hull-House that aroused my interest in industrial diseases.