. According to the thirteenth census,
Arizona contained eight cities with an aggregate population of 58,414.
The largest cities were Tucson, with a population of 13,193, and Phoenix
with 11,134.

Arizona produces more copper than any other State in the Union. Of the
total copper ore mined in the United States (1909) 27.7 per cent was
from Arizona. There are also good mines of gold and silver. Coal-mining,
marble-quarrying, lumbering, raising cattle, sheep, and ostriches are
also important industries in Arizona. Through the efforts of the
Reclamation service in completing the Roosevelt Dam and a dam at Parker,
and by the use of pumps, it is estimated that 1,000,000 acres of fertile
land will become available for cultivation. Other large areas are also
susceptible of irrigation.

In 1850 the territory of New Mexico was organized and in 1863 it was
reduced to its present limits with an area of 122,000 square miles. The
population of New Mexico in 1900 was 195,310 and in 1910 was 327,301 an
increase of 67.6 per cent. Albuquerque, with a population of 11,020, and
Rosewell with 6,172 were the two largest cities. Like Arizona, New
Mexico possesses great wealth in mines and forests, but the foundation
for her future industrial progress lies in her farms. In 1910 New Mexico
possessed 500,000 acres of irrigated land. It was estimated that
3,000,000 acres more were amenable to artificial watering and the
government is expending millions of dollars on projects which will
fertilize vast areas of this land.

During the year 1911 the world was astounded at the unparalleled
exhibitions of the possibilities of the aeroplane. The dream of
centuries had been realized, and American genius was responsible for the
achievement. In 1896, a model machine which had been constructed under
the direction of Professor Langley, secretary of the Smithsonian
Institution, driven by a one horse-power steam-engine, made three
flights of a mile each near Washington. Congress appropriated $50,000
for the construction of a complete machine, but after two unsuccessful
attempts to fly, with an operator, the project was abandoned.

Wilbur Wright and his brother Orville, bicycle manufacturers of Dayton,
Ohio, did not share in the general ridicule which followed this failure,
and after three years of experimentation demonstrated that the
principles upon which Professor Langley had constructed his machine
were, in the main, sound. The first successful flight o