nol' ij, n.
(1) familiarity, understanding, or information
gained by study or experience; (2) the body of truths or
facts accumulated in the course of time
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at St. Louis, Missouri, was the
first major bridge over the Mississippi River,
the first rail bridge over the Mississippi, and
the world's first steel-truss bridge. Completed
in 1874, it still carries light rail, automobile
and pedestrian traffic today.
Francisco de San Martín
left the Spanish Army to fight in the South
American wars for independence. His military
leadership and expertise helped Chile, Peru, and
Argentina gain their independence.
Python (Python reticulatus)
This snake is easily distinguished by its huge
size and the series of irregular diamond shapes
positioned dorsally along the back. The longest
snake in the world, the reticulated python
reguarly reaches lengths of 25 feet or more. It
is second to the green anaconda when it comes to
overall mass, however.
proved that the heart, by repeated
contractions, produces a continuous stream of
blood throughout the body which continually
returns to its source (the heart). He also showed
that the valves in the veins always direct blood
back to the heart.
Duck (Aix galericulata)
One of the most colorful of all ducks, the male
Mandarin duck has a red bill, large large white
crescent above eye, reddish face and
"whiskers," purple breast with two
vertical white bars, and orange flanks. Mandarin
ducks symbolize wedded bliss and fidelity in
traditional Chinese culture.
History of the Pencil
The first pencils using a stick of
graphite enclosed in a wood case were being
mass-produced in Nuremberg by 1662. In 1795, Nicholas
Jacques Conté received a patent for a process of
mixing powdered graphite and clay, forming the
mixture into sticks, and then hardening them in a
furnace that is still in use today.
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