3. Examination of the seat of danger to discover its extent, its
cost, and new seats of danger created by it.

4. Isolation of the dangerous thing or person.

5. Constant attention to prevent extension to other persons or
things.

6. Destruction or removal of disease germs or other causes of
danger.

7. Analysis and record, for future use, of lessons learned by
experience.

8. Education of the public to understand its relation to danger
checked or removed, its responsibility for preventing a recurrence
of the same danger, and the importance of promptly recognizing and
checking similar danger elsewhere.

With a chart showing what districts have the greatest number of
children and adults suffering from measles, typhoid fever, scarlet
fever, consumption, one can go within his own city or to a strange city
and in a surprisingly short time locate the nuisances, the dangerous
buildings, the open sewers, the cesspools, the houses without bathing
facilities, the dark rooms, the narrow streets, the houses without play
space and breathing space, the districts without parks, the polluted
water sources, the unsanitary groceries and milk shops. In country
districts a comparison of town with town as to the prevalence of
infection will enable one easily to learn where slop water is thrown
from the back stoop, whether the well, the barn, and the privy are near
together.

[Illustration: THE BABY, NOT THE LAW, IS THE TEST OF INFANT
PROTECTION IN COUNTRY AND IN CITY]

Testing health rights requires not only that there be a board of health
keeping track of and publishing every case of infection, but it
requires further that one community be compared with other communities
of similar size, and that each community be compared with itself year
for year. These comparisons have not been made and records do not exist
in many states.

FOOTNOTES:

[3] A striking demonstration of law enforcement that followed lawmaking
is given in _The Real Triumph of Japan_, L.L. Seaman, M.D.

CHAPTER IV

THE BEST INDEX TO COMMUNITY HEALTH IS THE PHYSICAL WELFARE OF SCHOOL
CHILDREN

Compulsory education laws, the gregarious instinct of children, the
ambition of parents, their self-interest, and the activities of
child-labor committees combine to-day to insure that one or more
representatives of practically every family in the United States will
be in public, parochial, or private schools for some par