Roosevelt

403d

Root

Following a rift between himself and Pres-
ident Taft, and a disagreement between him-
self and Republican leaders, he became in
1912 candidate of his newly organized Pro-
gressive Party for the presidency, but was
defeated in the November election by Wood-
row Wilson. (See UNITED STATES, History.}
An exploring trip to South America followed

o", by A. L. Pack

Theodore Roosevelt.

In 1914. During the World War, Roosevelt
urged on the administration an earlier en-
trance on the side of the Allies than was
in the plan of President Wilson. His death
occurred suddenly on January 6, 1919.

The personality of Theodore Roosevelt was
scarcely less striking than his career. His
most notable mental characteristics were an

extraordinary quickness of apprehension, a
keen interest in every subject which had to
do with human progress, and a whole-souled
scorn of the insincere. As an executive he
was distinguished for his resourcefulness in
devising, and his boldness in attempting, new
methods of accomplishing results for which
others had struggled in vain over well-beaten
paths, and his tireless pursuit of an end
upon which he had once fixed his purpose.
He was honored with the degree of LL.D.
from nearly every important university in
the United States, and many European uni-
versities. Roosevelt's published works in-
clude: The Winning of the West; American
Big Game Hunting (1893); The Strenuous
Life (1900); African Game Trails (1910);
The New Nationalism (1910) ,* Theodore
Roosevelt, an Autobiography (1913);
Through the Brazilian Wilderness (1914);
Life Histories of American Game Animals
(1914); America and the World War (191$).
His Complete Works, in 15 volumes, were
issued in 1910.

Roosevelt Dam, the chief feature of the
Salt River Project, an important irrigation
undertaking of the U. S. Reclamation Serv-
ice, located in the valley of the Salt River,
Arizona. The Roosevelt Dam lies in an in-
accessible mountain region, 75 m* n.e. of
Phoenix. The site of the dam is in a narrow
gorge cut by the river through a lofty ridge
of sandstone, which helped supply the mate-
rial for its construction. The dam was com-
pleted in 1911 at a cost of $6,500,000. Its
base covers about an acre of ground, and it
rises, from foundation to parapet, 286 ft. At
the base it is 235 ft., and on the top 1,080
ft., in length. The dam is built on a curve
upstream, having a radius of about 400 ft.
The reservoir outlet is through a tunnel
about 500 ft. long, in which are six gates to
be used for sluicing and for regulating the
flow from the reservoir. With the reservoir
full these gates discharge about 10,000 cubic
ft. per second. Two spillways, each about
200 ft. long, carry the flood waters around
the dam. The dam backs up the waters of
Salt River and Tonto Creek about 16 m.,
making a lake about 25 m. long, and i to 3
m. wide, impounding about 1,200,000 acre
ft. (about 456,190,000,000 gallons) of water.
On Feb. 5, 1911, the last stone was set, and
on March 18 the dam was formally opened
by Theodore Roosevelt, in whose honor it
is named.

Root, in Algebra, denotes any value of the
unknown quantity in an equation which will