The Seal of the State of Illinois, 1818. The seal shows the bald eagle on a rock carrying a shield. It carries a banner with the state motto, "State Sovereignty, National Union."

Seal of Illinois

The Seal of the State of Illinois, 1818. The seal shows the bald eagle on a rock carrying a shield.…

The Seal of the State of Indiana. The seal shows a sunrise, a woodman, and a buffalo fleeing. This represents civilization, nature fleeing westward, and a bright future.

Seal of Indiana

The Seal of the State of Indiana. The seal shows a sunrise, a woodman, and a buffalo fleeing. This represents…

The Great Seal of the State of Iowa. The seal pictures a soldier in wheat field with the American flag and the Mississippi River in the background. The eagle holds the motto, "Our liberties we prize and our rights we will maintain."

Seal of Iowa

The Great Seal of the State of Iowa. The seal pictures a soldier in wheat field with the American flag…

The Great Seal of the State of Kansas, 1861. The seal pictures a sunrise, a steamboat, plowing, a wagon, Native Americans hunting bison, and the state motto, 'Ad Astra per Aspera' meaning "To the Stars through Difficulties."

Seal of Kansas

The Great Seal of the State of Kansas, 1861. The seal pictures a sunrise, a steamboat, plowing, a wagon,…

The seal of the Commonwealth of Kentucky. The seal shows a frontiersman and a statesman shaking hands with the state motto, "United we stand, divided we fall."

Seal of Kentucky

The seal of the Commonwealth of Kentucky. The seal shows a frontiersman and a statesman shaking hands…

The seal of the state of Louisiana. The seal shows a pelican in her piety, feeding her young with her own blood. This image is surrounded with the state motto, "Union, justice, and confidence."

Seal of Louisiana

The seal of the state of Louisiana. The seal shows a pelican in her piety, feeding her young with her…

The seal of the state of Maine. The seal has a farmer with his scythe and a sailor with his anchor. Above the shield is the state motto 'Dirigo' meaning "I lead."

Seal of Maine

The seal of the state of Maine. The seal has a farmer with his scythe and a sailor with his anchor.…

The Great Seal of the State of Maryland. The seal is a shield being held by plowman and a fisherman. The motto 'Fatti maschii, parole femine' means "Strong deeds, gentle words."

Seal of Maryland

The Great Seal of the State of Maryland. The seal is a shield being held by plowman and a fisherman.…

The Seal of the State of Massachusetts. The seal has a shield in the center with a Algonquin Native American holding a bow and arrow. Around the shield, is a blue ribbon with the state motto, 'Ense Petit Placidam Sub Libertate Quietem" which means "By the sword we seek peace, but only under liberty."

Seal of Massachusetts

The Seal of the State of Massachusetts. The seal has a shield in the center with a Algonquin Native…

The Great Seal of the State of Michigan. This seal shows the Michigan's coat of arms held by an elk and a moose. The white ribbon holds the state motto, 'Si Quaeris Peninsulam Amoenam Circumspice' which means "If you seek a pleasant peninsula, look about you."

Seal of Michigan

The Great Seal of the State of Michigan. This seal shows the Michigan's coat of arms held by an elk…

The Great Seal of the State of Minnesota. The seal depicts a farmer plowing as a Native American rides by horseback. Above, the state motto reads, 'L'etoile du nord' meaning "Star of the North."

Seal of Minnesota

The Great Seal of the State of Minnesota. The seal depicts a farmer plowing as a Native American rides…

The Great Seal of the State of Mississippi. The bald eagle wears stars and stripes and holds an olive branch symbolizing peace and arrows representing war.

Seal of Mississippi

The Great Seal of the State of Mississippi. The bald eagle wears stars and stripes and holds an olive…

The Great Seal of the State of Missouri. Two grizzly bears hold a shield with the national seal and icons symbolizing growth and strength. The scroll holds the state motto, 'Salus Populi Suprema Lex Esto' meaning "Let the welfare of the people be the supreme law."

Seal of Missouri

The Great Seal of the State of Missouri. Two grizzly bears hold a shield with the national seal and…

The Great Seal of the State of Montana. The seal shows Montana and a shovel, pick, and plow symbolizing agriculture. The state motto is 'Oro y Plata' meaning "Gold and Silver."

Seal of Montana

The Great Seal of the State of Montana. The seal shows Montana and a shovel, pick, and plow symbolizing…

The Great Seal of the State of Nebraska, 1867. The seal shows a steamboat on the Missouri River, a train, a cabin, and a blacksmith. The banner holds the state motto, "Equality Before the Law."

Seal of Nebraska

The Great Seal of the State of Nebraska, 1867. The seal shows a steamboat on the Missouri River, a train,…

The Great Seal of the State of Nevada. The seal shows wheat, a sickle, and a plow representing agriculture. It also shows sunshine, mountains and the state motto, "All for Our Country."

Seal of Nevada

The Great Seal of the State of Nevada. The seal shows wheat, a sickle, and a plow representing agriculture.…

The Great Seal of the State of New Hampshire, 1784. The seal depicts a ship on stocks with a sunrise in the background.

Seal of New Hampshire

The Great Seal of the State of New Hampshire, 1784. The seal depicts a ship on stocks with a sunrise…

The Great Seal of the State of New Jersey. The seal features Liberty and Ceres holding a shield with three plows representing agriculture. The state motto in the ribbon below reads, "Liberty and Prosperity."

Seal of New Jersey

The Great Seal of the State of New Jersey. The seal features Liberty and Ceres holding a shield with…

The Great Seal of the State of New Mexico, 1850. The seal pictures the American Bald Eagle and the Mexican Eagle holding a cactus in its talons and a snake in its mouth. Below them is a banner with the state motto, 'Crescit Eundo' meaning "It grows as it goes."

Seal of New Mexico

The Great Seal of the State of New Mexico, 1850. The seal pictures the American Bald Eagle and the Mexican…

The Great Seal of the State of New York. The seal shows Justice holding the scales and Liberty stepping on the British Crown. Between them, is a shield with the sun and boats on the Hudson River. Beneath is the state motto 'Excelsior' meaning "Ever upwards."

Seal of New York

The Great Seal of the State of New York. The seal shows Justice holding the scales and Liberty stepping…

The Great Seal of the State of North Carolina, 1773. The seal shows Liberty standing and Plenty holding a cornucopia. Below is the state motto, 'Esse Quam Videri' meaning "To Be Rather Than To Seem."

Seal of North Carolina

The Great Seal of the State of North Carolina, 1773. The seal shows Liberty standing and Plenty holding…

The Great Seal of the State of North Dakota. The seal depicts a tree, wheat, a plow, and a Native American on horseback hunting a buffalo. Above is the state motto, "Liberty and Union Now and Forever, One and Inseparable."

Seal of North Dakota

The Great Seal of the State of North Dakota. The seal depicts a tree, wheat, a plow, and a Native American…

The Great Seal of the State of Ohio. The seal features a sunrise behind a wheat field and mountains. The wheat bundle symbolizes agriculture and the seventeen arrows represents Ohio's admittance as the seventeenth state.

Seal of Ohio

The Great Seal of the State of Ohio. The seal features a sunrise behind a wheat field and mountains.…

The Great Seal of the State of Oklahoma, 1907. The seal has a star with five rays hold seals of Cherokee, Chickasaw, Choctaw, Creek, and Seminole.

Seal of Oklahoma

The Great Seal of the State of Oklahoma, 1907. The seal has a star with five rays hold seals of Cherokee,…

The Great Seal of the State of Oregon. The seal shows mountains, an elk, a wagon, and the Pacific Ocean.

Seal of Oregon

The Great Seal of the State of Oregon. The seal shows mountains, an elk, a wagon, and the Pacific Ocean.

The Seal of the State of Pennsylvania. The seal shows a shield which has a ship, a plow, and sheaves of wheat. This represents commerce, labor, and agriculture.

Seal of Pennsylvania

The Seal of the State of Pennsylvania. The seal shows a shield which has a ship, a plow, and sheaves…

The Seal of the State of Rhode Island and Providence Plantations, 1636. The seal shows a maritime anchor and the word "Hope."

Seal of Rhode Island

The Seal of the State of Rhode Island and Providence Plantations, 1636. The seal shows a maritime anchor…

The Great Seal of the State of South Carolina. The seal shows two ovals with palmetto tree branches. On the left is a palmetto tree with 'Animis Opibusoue Parati' meaning "Prepared in Mind and Resources." On the right there is Spes or Hope. Underneath her, is the motto 'Dum Spiro Spero' meaning "While I Breathe I Hope."

Seal of South Carolina

The Great Seal of the State of South Carolina. The seal shows two ovals with palmetto tree branches.…

The Great Seal of the State of South Dakota, 1889. The seal shows hills, a river and a boat, a farmer, a mine, and cattle. The state motto is above and reads "Under God the People Rule."

Seal of South Dakota

The Great Seal of the State of South Dakota, 1889. The seal shows hills, a river and a boat, a farmer,…

The Great Seal of the State of Tennessee. The seal shows images such as wheat and a plow to represent agriculture and a boat to symbolize commerce.

Seal of Tennessee

The Great Seal of the State of Tennessee. The seal shows images such as wheat and a plow to represent…

The Seal of Texas. The seal has simply a star which is a common symbol of Texas, an olive branch, and a live oak branch.

Seal of Texas

The Seal of Texas. The seal has simply a star which is a common symbol of Texas, an olive branch, and…

The Great Seal of the State of Utah, 1896. The seal shows a bald eagle holding a shield. The shield has a beehive with the motto "Industry."

Seal of Utah

The Great Seal of the State of Utah, 1896. The seal shows a bald eagle holding a shield. The shield…

The Great Seal of Vermont. The seal depicts a pine tree in the center with grain sheaves and a cow at its side. Below holds the state motto "Freedom and Unity."

Seal of Vermont

The Great Seal of Vermont. The seal depicts a pine tree in the center with grain sheaves and a cow at…

The Seal of Virginia. The seal shows a Virtus standing over the defeated Tyranny with his fallen crown. Underneath them reads, 'Sic Semper Tyrannis' whiich means "Thus Always to Tyrants."

Seal of Virginia

The Seal of Virginia. The seal shows a Virtus standing over the defeated Tyranny with his fallen crown.…

The Seal of the State of Washington, 1889. The seal contains a portrait of George Washington and the 1889, when Washington state was admitted to the Union.

Seal of Washington

The Seal of the State of Washington, 1889. The seal contains a portrait of George Washington and the…

The Seal of the State of West Virginia. This seal depicts two men representing agriculture and industry standing on the sides of a boulder inscribed with the date West Virginia became a state, June 20, 1863. The state motto is below reading 'Montani Semper Liberi' meaning "Mountaineers Always Free."

Seal of West Virginia

The Seal of the State of West Virginia. This seal depicts two men representing agriculture and industry…

The Great Seal of the State of Wisconsin. The seal shows a sailor and a yeoman holding the state's coat of arms. It also shows the state animal, the badger and the state motto "Forward."

Seal of Wisconsin

The Great Seal of the State of Wisconsin. The seal shows a sailor and a yeoman holding the state's coat…

The Great Seal of the State of Wyoming. The seal shows two men symbolizing livestock and mining next to a draped statue with the banner "Equal Rights." The ribbon around the columns reads "Oil, Mines, Livestock, Grain."

Seal of Wyoming

The Great Seal of the State of Wyoming. The seal shows two men symbolizing livestock and mining next…

The Siege of Yorktown or Battle of Yorktown in 1781 was a decisive victory by a combined assault of American forces led by General George Washington and French forces led by General Comte de Rochambeau over a British Army commanded by General Lord Cornwallis. It proved to be the last major land battle of the American Revolutionary War, as the surrender of Cornwallis’s army (the second major surrender of the war) prompted the British government to eventually negotiate an end to the conflict.

<p>"Present appearance of the British Works at Yorktown. This view is from the fields in the direction of the American works, looking north. Toward the left is seen a portion of Governor Nelson's house, and on the extreme left, a few other houses in Yorktown appear."—Lossing, 1851

British Works at Yorktown

The Siege of Yorktown or Battle of Yorktown in 1781 was a decisive victory by a combined assault of…

The Sea Raven (Hemitripterus americanus) is a bottom-dwelling fish that is common in the north of the Atlantic and Pacific Oceans.

Sea Raven

The Sea Raven (Hemitripterus americanus) is a bottom-dwelling fish that is common in the north of the…

Zouave was the title given to certain infantry regiments in the French army, normally serving in French North Africa between 1831 and 1962. The name was also adopted during the 19th century by units in other armies, especially volunteer regiments raised for service in the American Civil War. The 11th New York was initially led by Col. Elmer E. Ellsworth, until his death in 1861. The regiment was badly mauled during the First Battle of Bull Run in July 1861 as it acted as the rear guard for the retreating Army of the Potomac.

Ellsworth Zouave

Zouave was the title given to certain infantry regiments in the French army, normally serving in French…

James Robertson (June 28, 1742–September 1, 1814) was a North Carolina farmer and explorer of the 18th century.

James Robertson

James Robertson (June 28, 1742–September 1, 1814) was a North Carolina farmer and explorer of the…

Northern Water Hemlock is a species of Cicuta, native to northern and central Europe, northern Asia and northwestern North America. It is a perennial herbaceous plant which grows up to 1&ndash;2 m tall. The stems are smooth, branching, swollen at the base, purple-striped, and hollow except for partitions at the junction of the leaves and stem. In cross section the stems have one flat side and the other sides are rounded. The leaves are alternate, tripinnate, only coarsely toothed, unlike the ferny, lacy leaves found in many other members of the family Apiaceae. The flowers are small, white and clustered in umbrella shaped inflorescences typical of the family. The many flowered umbellets have unequal pedicels that range from 5 to 11 cm long during fruiting. An oily, yellow liquid oozes from cuts to the stems and roots.

Northern Water Hemlock

Northern Water Hemlock is a species of Cicuta, native to northern and central Europe, northern Asia…

The Hercules beetle (Dynastes hercules) is the most famous of the rhinoceros beetles. Native to the rain forests of Central and South America, they also can be found in coastal regions of North Carolina, their title is well deserved, with some (exceptionally rare) males reaching 6.75 inches (170 mm) in length. It is the largest of the 6 species in the Dynastes genus, and one of the largest beetles known.

Hercules Beetle

The Hercules beetle (Dynastes hercules) is the most famous of the rhinoceros beetles. Native to the…

Cynoglossum officinale (hound's tongue, dog's tongue, gypsy flower, and rats and mice due to its smell) is a herbaceous plant of the family Boraginaceae, found in most parts of Europe, and also North America where it was accidentally introduced. It can be either annual or biennial, with reddish-purple flowers blooming between May and September. It lives in wet places, waste land and hedges.

Hound's Tongue

Cynoglossum officinale (hound's tongue, dog's tongue, gypsy flower, and rats and mice due to its smell)…

The Great Seal of the United States is used to authenticate certain documents issued by the United States federal government.

First Great Seal of the United States (Front)

The Great Seal of the United States is used to authenticate certain documents issued by the United States…

The Great Seal of the United States is used to authenticate certain documents issued by the United States federal government.

First Great Seal of the United States (Back)

The Great Seal of the United States is used to authenticate certain documents issued by the United States…

The Great Seal of the United States is used to authenticate certain documents issued by the United States federal government.

Great Seal of the United States

The Great Seal of the United States is used to authenticate certain documents issued by the United States…

Captain Sir John Smith (c. January 1580&ndash;June 21, 1631) Admiral of New England was an English soldier, sailor, and author. He is remembered for his role in establishing the first permanent English settlement in North America at Jamestown, Virginia.

Smith's Escape from Slavery

Captain Sir John Smith (c. January 1580–June 21, 1631) Admiral of New England was an English soldier,…

In 1807, Fulton and King built the first commercial steamboat, the <em>North River Steamboat</em> (later known as the <em>Clermont</em>), which carried passengers between New York City and Albany, New York.

Fulton's Clermont

In 1807, Fulton and King built the first commercial steamboat, the North River Steamboat (later…

An illustration of an adult horseshoe crab from the dorsal aspect. The horseshoe crab or Atlantic horseshoe crab (Limulus polyphemus) is a marine chelicerate arthropod. Despite its name, it is more closely related to spiders, ticks, and scorpions than to crabs. Horseshoe crabs are most commonly found in the Gulf of Mexico and along the northern Atlantic coast of North America. A main area of annual migration is the Delaware Bay, although stray individuals are occasionally found in Europe.

Horseshoe Crab (Adult)

An illustration of an adult horseshoe crab from the dorsal aspect. The horseshoe crab or Atlantic horseshoe…

An illustration of a young horseshoe crab from the dorsal aspect. The horseshoe crab or Atlantic horseshoe crab (Limulus polyphemus) is a marine chelicerate arthropod. Despite its name, it is more closely related to spiders, ticks, and scorpions than to crabs. Horseshoe crabs are most commonly found in the Gulf of Mexico and along the northern Atlantic coast of North America. A main area of annual migration is the Delaware Bay, although stray individuals are occasionally found in Europe.

Horseshoe Crab (Young)

An illustration of a young horseshoe crab from the dorsal aspect. The horseshoe crab or Atlantic horseshoe…

A fifteenth century capital from the north spire of Chartres. The capitals were tall and slender, concave in profile, with heavy square or octagonal abaci. After the middle of the thirteenth century the carving became more realistic; the leaves, larger and more mature, were treated as if applied to the capital or moulding, not as if they grew out of it.

French Gothic Capital

A fifteenth century capital from the north spire of Chartres. The capitals were tall and slender, concave…

The chief advantages of the horizontal sundial are that it is easy to read, and the sun lights the face throughout the year. All the hour-lines intersect at the point where the gnomon's style crosses the horizontal plane. Since the style is aligned with the Earth's rotational axis, the style points true North and its angle with the horizontal equals the sundial's geographical latitude &lambda;. A sundial designed for one latitude can be used in another latitude, provided that the sundial is tilted upwards or downwards by an angle equal to the difference in latitude. For example, a sundial designed for a latitude of 40&deg; can be used at a latitude of 45&deg;, if the sundial plane is tilted upwards by 5&deg;, thus aligning the style with the Earth's rotational axis.

Horizontal Dial

The chief advantages of the horizontal sundial are that it is easy to read, and the sun lights the face…

A sundial is a device that measures time by the position of the Sun. In common designs such as the horizontal sundial, the sun casts a shadow from its style (a thin rod or a sharp, straight edge) onto a flat surface marked with lines indicating the hours of the day. As the sun moves across the sky, the shadow-edge progressively aligns with different hour-lines on the plate. Such designs rely on the style being aligned with the axis of the Earth's rotation. Hence, if such a sundial is to tell the correct time, the style must point towards true North (not the north or south magnetic pole) and the style's angle with horizontal must equal the sundial's geographical latitude.

Sundial

A sundial is a device that measures time by the position of the Sun. In common designs such as the horizontal…

An illustration of a Diplodocus skeleton and the caudal vertebrae (A and B). Diplodocus is a genus of diplodocid sauropod dinosaur whose fossils were first discovered in 1877 by S. W. Williston. It lived in what is now western North America at the end of the Jurassic Period. Diplodocus is one of the more common dinosaur fossils found in the Upper Morrison Formation, a sequence of shallow marine and alluvial sediments deposited about 150 to 147 million years ago, in what is now termed the Kimmeridgian and Tithonian stages.

Diplodocus

An illustration of a Diplodocus skeleton and the caudal vertebrae (A and B). Diplodocus is a genus of…

The Peregrine Falcon (Falco peregrinus), also known simply as the Peregrine, and historically as the "Duck Hawk" in North America, is a cosmopolitan bird of prey in the family Falconidae.

Duck Hawk

The Peregrine Falcon (Falco peregrinus), also known simply as the Peregrine, and historically as the…

The Green Heron (Butorides virescens) is a small wading bird in the Ardeidae family of herons, and is native to North and Central America.

Green Heron

The Green Heron (Butorides virescens) is a small wading bird in the Ardeidae family of herons, and is…

The Common Shrimp (Crangon crangon) is a shrimp fished mainly in the North Sea. The species is also known as the Brown Shrimp or the Sand Shrimp with the synonym Crangon vulgaris.

Common Shrimp

The Common Shrimp (Crangon crangon) is a shrimp fished mainly in the North Sea. The species is also…

Coccinellidae is a family of beetles, known variously as ladybirds (British English, Australian English, South African English), ladybugs (North American English) or lady beetles (preferred by some scientists). Lesser-used names include ladyclock, lady cow, and lady fly. The family name comes from its type genus, Coccinella. Coccinellids are found worldwide, with over 5,000 species described, more than 450 native to North America alone. Coccinellids are small insects, ranging from 1 mm to 10 mm (0.04 to 0.4 inches), and are commonly yellow, orange, or scarlet with small black spots on their wing covers, with black legs, head and antennae. A very large number of species are mostly or entirely black, gray, or brown and may be difficult for non-entomologists to recognize as coccinellids (and, conversely, there are many small beetles that are easily mistaken as such, like tortoise beetles).

Ladybug

Coccinellidae is a family of beetles, known variously as ladybirds (British English, Australian English,…