sand feet upon the San Francisco mountains. By
making suitable changes in altitude to fit the season it is possible to
enjoy perpetual spring.

Because Arizona is far south geographically it is only natural to
suppose that it is all very hot, which is a mistake. In the low
valleys of southern Arizona the summers are hot, but it is a dry heat
which is not oppressive, and the winters are delightfully pleasant. In
northern Arizona the winters are cold and the summers cool. There is
no finer summer climate in the world than is found on the high plateaus
and pine-topped mountains of northern Arizona. Prescott, Williams and
Flagstaff have a charming summer climate, while at Yuma, Phoenix and
Tucson the winter weather is simply perfect.

A mountain residence is not desirable for thin, nervous people or such
as are afflicted with any organic disease. A high altitude is too
stimulating for this class of patients and tends to increase
nervousness and aggravates organic disease. Such persons should seek a
coast climate and a low altitude, which is sedative, rather than risk
the high and dry interior. Any coast climate is better than the
mountains for nervous people, but the Pacific Coast is preferable to
any other because of its freedom from electrical storms and every other
form of disagreeable meteorological disturbance that tries the nerves.
The nervousness that is produced by a high altitude does not, as a
rule, develop suddenly, but grows gradually upon the patient. Those of
a sensitive nature feel it most and women more than men. After making
a change from a low to a high altitude sleep may be sound for a time,
but it soon becomes fitful and unrefreshing.

It has been discovered that altitude increases the amount of
hemoglobulin and thus enriches the blood and is particularly beneficial
to pale, thin people. It also sharpens the appetite and promotes
digestion and assimilation.

Persons suffering from rheumatism, neuralgia, advanced pulmonary
consumption, organic heart disease and all disorders of the brain and
nerves should avoid a high altitude. Patients that are afflicted with
any of the above-mentioned diseases are more comfortable in a low
altitude and should choose between the coast of California and the low,
dry lands of the lower Gila and Colorado rivers, according to the
season of the year and the quality of climate desired.

The diseases which are especially benefited by the climate of Arizona
are