Rocky

4019

Rodgers

was by Lewis and Clark in 1804. Other early
explorers were Harman, Long, Schoolcraft,
Nicollet, Bonneville, Pike, and especially Fre-
mont. Since 1840, numerous expeditions have
been sent to this work, and at the present
time the U. S. Geological Survey has parties
in this field each year.

Rocky Mountain Sheep. See Bighorn;
Sheep*

Rod, or Pole, or Perch, a unit of lineal
measure, used in land-surveying, and equival-
ent to sYz yards, or 16^2 ft.

command of the army, he revolted in 708,
and deprived him of the crown. Tarik, a
Moorish chief, gave his aid to the sons of the
deposed king, invaded Spain, and decided the
fate of the Gothic monarchy by defeating
Roderic in the battle of Guadalete, Roderic
himself being among the slain.

Rodez, chief tn. of French dep. Aveyron,
stands high on a river bluff, crowned by a
noble Gothic cathedral (1274-1535). It is
rich in houses of the i$th and i6th centuries.
There are manufactures of woolens, serge,

The American Rockies.
Left, Marshall Pass, Mount Ouray; Right, Long Lake and Snowy Range, Near Ward, Col.

Rodbertus, Johann Karl (1805-75), Ger-
man economist, the founder of scientific so-
cialism, was born at Greifswald in Pomerania.
Starting with the postulate that labor is the
source of all wealth, Rodbertus believed that
the natural effects of the operation of the ex-
isting economic laws will be to bring about
eventually the realization of the ideal of
state socialism, when land, capital, and the
products of labor shall be national property.
His views are laid down in Zur Erkldrung
und Abhilfe der heutigen Kreditnot des
Grundbesitzes (1868), and other works.

Rodentia, or Gnawing Mammals, the
order which includes rats and mice, hares and
rabbits, the squirrels, porcupines, beavers, and
a number of other mostly small forms.

Rodeo, Spanish, literally a fair or market.
In this country applied to the "wild west"
show featuring exhibitions of riding, roping
and steer-wrestling.

Roderic (d. 711), the last of the Visigothic
kings on the throne of Spain. Having been
entrusted by his sovereign, Witiza, with the

and straw hats. A Roman aqueduct (restored)
still brings water to the town. It has been
the seat of a bishopric since the 4th century;
p. 16,105.
Rodgers, John (1771-1838), American

Teeth of Rodent.
I, Incisors; P, premolars; M, molars.

naval officer, born in Hartford co., Md. After
serving in the Mediterranean squadron in
1803 and 1804 he succeeded to the command
of the squadron in 1805, and finally dictated