iled, or, still better,
sterilized at home by putting it in bottles or other containers, and
placing in a vessel of hot water, keeping the milk for several hours
about half-way to the boiling point, then cooling gradually.

All these means of prevention are troublesome and require time and work,
but as the result in health for the family is sure, every housekeeper
should gladly take this extra burden on herself if it be necessary. In
some states and many cities, the laws governing dairies are now so
strict that there is no need of doing this work in the home. This care
in the dairies should be insisted on everywhere, even if it raises the
price of milk, because it means the saving of many doctor and drug bills
and also raises the standard of public health.

Yellow fever was formerly dreaded more than any other single disease
because it was so wide-spread, so fatal, and was thought to be violently
contagious, but during the Spanish-American War it was proved that it is
not contagious at all, but comes only from the bite of a certain
mosquito, the stegomia, which is usually found only in hot climates. It
is conveyed in this way: the mosquito bites a yellow fever patient; for
twelve days it is harmless, but after that time it may infect every
person that it bites.

If every yellow fever patient could be screened with netting to prevent
his being bitten, we could prevent the yellow fever mosquito from
becoming infected. Further, if we can prevent healthy people from being
bitten by fever-infected mosquitoes, they will escape the disease, and
still further, if we can destroy the eggs of mosquitoes, we can entirely
obviate all danger of yellow fever in a community.

The mosquito breeds only in water; by having all cisterns, rain-water
barrels, and other water containers carefully covered, and by spreading
the surface of pools of standing water, especially dirty water, covered
with greenish scum, with a thick coating of kerosene oil, we can prevent
the eggs from hatching. This has been done in many communities in Cuba
and the southern part of the United States, and has resulted in
completely stamping out the disease in those places.

Malaria is caused by another mosquito, called the anopheles and while
malaria is seldom fatal as is yellow fever, it causes much suffering and
loss of time, and strong efforts should be made to prevent it. The same
measures that are used to prevent yellow fever will banish malaria from
any co