more than 100,000, while among the very best paid workers the
number is not less than 150,000 and among the very poorest paid
workers at least 350,000. To show you just what those proportions are,
I have represented the matter in a little diagram, which you can
understand at a glance:

[Illustration: DIAGRAM
Showing Relative Death-Rate Among Persons of Different Social
Classes.]

There are some diseases, notably the Great White Plague. Consumption,
which we call "diseases of the working-classes" on account of the fact
that they prey most upon the wearied, ill-nourished bodies of the
workers. Not that they are confined to the workers entirely, but
because the workers are most afflicted by them. Because the workers
live in crowded tenement hovels, work in factories laden with dust and
disease germs, are overworked and badly fed, this and other of the
great scourges of the human race find them ready victims.

Here is another diagram for you, Jonathan, showing the comparative
mortality from Consumption among the workers engaged in six different
industrial occupations and the members of six groups of professional
workers.

[Illustration: DIAGRAM
Showing Relative Mortality From Tuberculosis.

Deaths per 100,000 living in the same occupation

Marble and stone cutters. 540
Cigar makers and tobacco workers. 476
Compositors, printers, pressmen. 435
Barbers and hairdressers. 334
Masons (brick and stone). 294
Iron and steel workers. 236
Physicians and Surgeons. 168
Engineers and Surveyors. 145
School teachers. 144
Lawyers. 140
Clergymen. 123
Bankers, brokers, officials of companies, etc. 92]

I want you to study this diagram and the figures by which it is
accompanied, Jonathan. You will observe that the death rate from
Consumption among marble and stone cutters is six times greater than
among bankers and brokers and directors of companies. Among cigar
makers and tobacco workers it is more than five times as great. Iron
and steel workers do not suffer so much from the plague as some other
workers, according to t