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Principal forms of the hexagonal system: hexagonal prism

Hexagonal Prism Second Order

Principal forms of the hexagonal system: hexagonal prism

Principal forms of the hexagonal system: hexagonal prism

Hexagonal Prism First Order

Principal forms of the hexagonal system: hexagonal prism

The Temple of Hephaestus and Athena Ergane, also known as the Hephaisteion or Theseion, is the best preserved ancient Greek temple. It is a Doric order peripteral temple, located at the north-west side of the Agora of Athens, on top of the Agoraios Kolonos hill. From the 7th century until 1834, it served as the Greek Orthodox church of St. George Akamates.

Temple of Theseus

The Temple of Hephaestus and Athena Ergane, also known as the Hephaisteion or Theseion, is the best…

Ectrichodia cruciata is a species of assassin bugs in the Hemiptera order of true bugs.

Assassin Bug

Ectrichodia cruciata is a species of assassin bugs in the Hemiptera order of true bugs.

Elachertus cacoeciae is a species of Chalcid wasp of the Hymenoptera order.

Chalcid Wasp

Elachertus cacoeciae is a species of Chalcid wasp of the Hymenoptera order.

The skeleton of an elasmosaurus, a dinosaur in the order of plesiosaurs.

Elasmosaurus Skeleton

The skeleton of an elasmosaurus, a dinosaur in the order of plesiosaurs.

The Elephantfish (Callorhinchus callorhynchus) is a species of fish in the Chimaeriformes order of chimaeras.

Elephantfish

The Elephantfish (Callorhinchus callorhynchus) is a species of fish in the Chimaeriformes order of chimaeras.

An illustration of the flower of the mistletoe plant. Mistletoe is the common name for a group of hemi-parasitic plants in the order Santalales that grow attached to and within the branches of a tree or shrub.

Mistletoe Flower

An illustration of the flower of the mistletoe plant. Mistletoe is the common name for a group of hemi-parasitic…

An illustration of one staminate flower in section, magnified twelve times. Mistletoe is the common name for a group of hemi-parasitic plants in the order Santalales that grow attached to and within the branches of a tree or shrub.

Mistletoe Staminate

An illustration of one staminate flower in section, magnified twelve times. Mistletoe is the common…

An illustration of pistillate flowers of mistletoe. Mistletoe is the common name for a group of hemi-parasitic plants in the order Santalales that grow attached to and within the branches of a tree or shrub.

Pistillate Flowers of Mistletoe

An illustration of pistillate flowers of mistletoe. Mistletoe is the common name for a group of hemi-parasitic…

An illustration of one pistillate flower of mistletoe. Mistletoe is the common name for a group of hemi-parasitic plants in the order Santalales that grow attached to and within the branches of a tree or shrub.

One Pistillate Flower of Mistletoe

An illustration of one pistillate flower of mistletoe. Mistletoe is the common name for a group of hemi-parasitic…

An illustration of a mistletoe plant attached to the host plant. Mistletoe is the common name for a group of hemi-parasitic plants in the order Santalales that grow attached to and within the branches of a tree or shrub.

Mistletoe Attached to Host Plant

An illustration of a mistletoe plant attached to the host plant. Mistletoe is the common name for a…

Fly orchid (Ophrys insectifera) is a plant of the family Orchidaceae, a native of the British Isles and Europe favouring sites with alkaline soil. The name arises because it resembles a fly, being totally dependent on flies and bees for pollination. However this is fairly unsuccessful as they seldom visit the flower and it forms seed only infrequently. The plants use scent to attract male flies, which pollinate the flowers as they attempt to mate with the flower. The scent released by the flowers mimic female fly sexual pheromones.

Fly Orchid

Fly orchid (Ophrys insectifera) is a plant of the family Orchidaceae, a native of the British Isles…

"In architecture, the swelling or outward curve of the profile of the shaft of a column. Entasis. e e, arcs of entasis." -Whitney, 1911

Entasis

"In architecture, the swelling or outward curve of the profile of the shaft of a column. Entasis. e…

"The 'house of Erechtheus'; a temple of Ionic order on the Acropolis of Athens, noted as one of the most original achievements of Hellenic architecture." -Whitney, 1911

Erechtheum

"The 'house of Erechtheus'; a temple of Ionic order on the Acropolis of Athens, noted as one of the…

An illustration of an inclined plane pulley. "Let the weight w be started to move p the plane, and let P be the pull in the cord which just keeps up steadily the motion imparted to w. Then id l is the length of the plane and h its vertical height, it is evident that when w rolls the whole distance l, P falls through the same distance since the length of l of cord passes over the pulley." -Britannica, 1891

Incline Plane Pulley

An illustration of an inclined plane pulley. "Let the weight w be started to move p the plane, and let…

Plagiochila is a large, common, and widespread genus of liverworts in order Jungermanniales. It is a member of the family Plagiochilaceae within that order. There may be anywhere from 500 to 1300 species, most of them from the tropics; the exact number is still under revision. The genus also has a wide distribution in temperate and arctic areas.

Phagiochila

Plagiochila is a large, common, and widespread genus of liverworts in order Jungermanniales. It is a…

The flowering branch of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

Coca

The flowering branch of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

The leaf of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

Coca Leaf

The leaf of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

"Escallonia macrantha. Escallonia is a South American genus of trees or shrubs, of the natural order Saxifragaceae, allied to the Itea of the United States." -Whitney, 1911

Escallonia

"Escallonia macrantha. Escallonia is a South American genus of trees or shrubs, of the natural order…

An illustration of Noticulales with buds. The Noctilucales are a peculiar order of marine dinoflagellates. They differ from most others in that the mature cell is diploid and its nucleus does not show a dinokaryotic organization. These cells are very large, from 1 to 2 millimetres in diameter, and are filled with large buoyant vacuoles. Some may contain symbiotic green algae, but there are no chloroplasts. Instead, they feed on other plankton, and there is usually a special tentacle involved in ingestion.

Noctilucales

An illustration of Noticulales with buds. The Noctilucales are a peculiar order of marine dinoflagellates.…

An illustration of Noticulales in section: an, anus; d, denticle; f, flagellum; t, tentacle. The Noctilucales are a peculiar order of marine dinoflagellates. They differ from most others in that the mature cell is diploid and its nucleus does not show a dinokaryotic organization. These cells are very large, from 1 to 2 millimetres in diameter, and are filled with large buoyant vacuoles. Some may contain symbiotic green algae, but there are no chloroplasts. Instead, they feed on other plankton, and there is usually a special tentacle involved in ingestion.

Noctilucales

An illustration of Noticulales in section: an, anus; d, denticle; f, flagellum; t, tentacle. The Noctilucales…

The Noctilucales are a peculiar order of marine dinoflagellates. They differ from most others in that the mature cell is diploid and its nucleus does not show a dinokaryotic organization. These cells are very large, from 1 to 2 millimetres in diameter, and are filled with large buoyant vacuoles. Some may contain symbiotic green algae, but there are no chloroplasts. Instead, they feed on other plankton, and there is usually a special tentacle involved in ingestion.

Noctilucales

The Noctilucales are a peculiar order of marine dinoflagellates. They differ from most others in that…

Illustration of a right spherical triangle and the five circular parts placed in the sectors of a circle in the order in which they occur in the triangle. "The ten formulas used in the solution of spherical right triangles can be expressed by means of two rules, known as Napier's rules of circular parts."

Napier's Right Spherical Triangle

Illustration of a right spherical triangle and the five circular parts placed in the sectors of a circle…

A mass of coccoliths; a marine pelagic plant of low order covered with calcereous plates. A coccolithophore is a unicellular, eukaryotic phytoplankton (alga).

Coccolithophora

A mass of coccoliths; a marine pelagic plant of low order covered with calcereous plates. A coccolithophore…

Colonial, plant-like animals closely related to jellyfish, with stinging cells, Any member of the invertebrate order Hydroida (class Hydrozoa, phylum Cnidaria). Hydroids have three basic life-cycle stages: (1) a tiny free-swimming planula larva about 1 mm (0.04 inch) long, which settles and grows into (2) a sessile (attached), usually colonial hydroid stage, which in turn liberates (3) medusa.

Medusa of a Hydroid

Colonial, plant-like animals closely related to jellyfish, with stinging cells, Any member of the invertebrate…

An perpendicular section of a sea anemone. Sea anemones are a group of water dwelling, predatory animals of the order Actiniaria; they are named after the anemone, a terrestrial flower. As cnidarians, sea anemones are closely related to corals, jellyfish, tube-dwelling anemones, and Hydra.

Perpendicular Section of a Sea Anemone

An perpendicular section of a sea anemone. Sea anemones are a group of water dwelling, predatory animals…

Eucope diaphana is a species of marine animal in the order Anthomedusae.

Eucope

Eucope diaphana is a species of marine animal in the order Anthomedusae.

The Malaysian Rail Babbler (Eupetes macrocerus) is a songbird in the Passeriformes order.

Malaysian Rail Babbler

The Malaysian Rail Babbler (Eupetes macrocerus) is a songbird in the Passeriformes order.

An accountant's sheet of payroll with employee names, hours per day, and pay rate. "Wages are usually calculated on the basis of 8 or 10 hours to a day. In finding the amount due, in order to avoid fractions, it is best to find the total time in hours, multiply by the rate per day and then divide by 8 or 10, carrying decimals to three places." -Moore, 1907

Pay Roll

An accountant's sheet of payroll with employee names, hours per day, and pay rate. "Wages are usually…

"A bank draft is an order written by one bank directing another bank to pay a specified sum of money to a third party, or to his order." -Moore, 1907

Bank Draft

"A bank draft is an order written by one bank directing another bank to pay a specified sum of money…

"A check is an order on a bank by a depositor for the payment of money; except that it is drawn by a person, it is very much like a bank draft." -Moore, 1907

Personal Check

"A check is an order on a bank by a depositor for the payment of money; except that it is drawn by a…

In order to fill in the spaces from the three 2000 cubic inch additions, four new additions must be added: three 20x5x5 bars equaling 500 cubic inches and a 5x5x5 (125 cubic inches) cube for the corner. You can find the final cube <a href="../62393/62393_cube_add3.htm">here</a>.

Cube with Additions 2

In order to fill in the spaces from the three 2000 cubic inch additions, four new additions must be…

The Fairy Shrimp (Branchipus diaphanus) is a species of crustacean belonging to the Anostraca order.

Fairy Shrimp

The Fairy Shrimp (Branchipus diaphanus) is a species of crustacean belonging to the Anostraca order.

"One of an order of beings, the life-principles or geniuses or tutelary spirits of living beings, believed in and reverenced by the ancient Persians, adherents of the Zoroastrian religion. (Also) a name given ... to a symbol seen on monuments of ancient Persian origin, representing a winged circle, with or without a manlike figure in it, hovering over the head of a king or other person, and believed by some to represent his tutelary spirit." -Whitney, 1911

Feloher from Nineveh

"One of an order of beings, the life-principles or geniuses or tutelary spirits of living beings, believed…

The human flea (Pulex irritans) is a parasite in the the Siphonaptera order of fleas.

Human Flea

The human flea (Pulex irritans) is a parasite in the the Siphonaptera order of fleas.

Aphrophora quadrangularis is a species of Froghopper, an insect in the order Hemiptera.

Dorsal View of Froghopper

Aphrophora quadrangularis is a species of Froghopper, an insect in the order Hemiptera.

The Pin-Tailed Sandgrouse (Pterocles alchata) is a bird in the Columbiformes order.

Pin-Tailed Sandgrouse

The Pin-Tailed Sandgrouse (Pterocles alchata) is a bird in the Columbiformes order.

The Northern Gannet (Morus bassanus) is a bird in the Pelecaniformes order of waterbirds. It was once known as the synonym Sula bassana.

Northern Gannet

The Northern Gannet (Morus bassanus) is a bird in the Pelecaniformes order of waterbirds. It was once…

David Glasgow Farragut (July 5, 1801 &ndash; August 14, 1870) was a flag officer of the United States Navy during the American Civil War. He was the first rear admiral, vice admiral, and admiral of the Navy. He is remembered in popular culture for his order at the Battle of Mobile Bay, usually paraphrased: "Damn the torpedoes, full speed ahead!".

David Glasgow Farragut

David Glasgow Farragut (July 5, 1801 – August 14, 1870) was a flag officer of the United States…

John Wesley (1703 &ndash; 2 March 1791) was an Anglican cleric and Christian theologian who founded the Arminian Methodist movement. The Wesley Methodist Movement began when Wesley took over open-air preaching started by George Whitefield at Hanham Mount, Kingswood, and Bristol.

John Wesley

John Wesley (1703 – 2 March 1791) was an Anglican cleric and Christian theologian who founded…

The star of the Order of the Garter. "Order of the Garter, the highest order of knighthood in Great Britain, consisting of the sovereign, the Prince of Wales, and twenty-four knights companions, and open, in addition, to such English princes and foreign sovereigns as may be chosen, and sometimes to extra companions chosen for special reasons, so that the whole order usually numbers about fifty." -Whitney, 1911

Order of the Garter Star

The star of the Order of the Garter. "Order of the Garter, the highest order of knighthood in Great…

The collar of the Order of the Garter. "Order of the Garter, the highest order of knighthood in Great Britain, consisting of the sovereign, the Prince of Wales, and twenty-four knights companions, and open, in addition, to such English princes and foreign sovereigns as may be chosen, and sometimes to extra companions chosen for special reasons, so that the whole order usually numbers about fifty." -Whitney, 1911

Order of the Garter Collar

The collar of the Order of the Garter. "Order of the Garter, the highest order of knighthood in Great…

The Gharial or gavial (Gavialis gangeticus) is a large reptile in the Crocodilia order.

Gharial

The Gharial or gavial (Gavialis gangeticus) is a large reptile in the Crocodilia order.

Anteaters are the four mammal species of the suborder Vermilingua commonly known for eating ants and termites. Together with the sloths, they compose the order Pilosa. The name "anteater" is also colloquially applied to the unrelated antbear, numbat, echidna, and pangolin.

Anteaters

Anteaters are the four mammal species of the suborder Vermilingua commonly known for eating ants and…

"And they came to the place which God had told him of; and Abraham built an altar there, and laid the wood in order, and bound Isaac his son, and laid him on the altar upon the wood." Genesis 22:9 KJV

Abraham Offering Isaac

"And they came to the place which God had told him of; and Abraham built an altar there, and laid the…

"The Escutcheon is sometimes divided into a great number of parts, in order to place in it the arms of several families to which one is allied; this is called a genealogical achievement. The compartments are called QUARTERINGS." -Hall, 1862

Quarterings

"The Escutcheon is sometimes divided into a great number of parts, in order to place in it the arms…

John Brown's Fort (the engine house) from John Brown's Raid on Harpers Ferry. Brown led a group of 21 men in a raid on the Arsenal on October 16, 1859 in order to initiate a slave uprising throughout the South. The raid was unsuccessful but was a catalyst for the Civil War.

John Brown's Fort in Harpers Ferry

John Brown's Fort (the engine house) from John Brown's Raid on Harpers Ferry. Brown led a group of 21…

John Adams Dix, of New York, was appointed Secretary of the Treasury. He sent Mr. Jones to New Orleans with an order to Captain Breshwood, commanding the revenue-cutter at that port, to sail to New York. The captain was a secessionist and proposed to turn the vessel over to the Confederates, whereupon Secretary Dix sent this dispatch: "If any man attempts to haul down the American flag, shoot him on the spot!"

Fac-smile of General John A. Dix's Dispatch

John Adams Dix, of New York, was appointed Secretary of the Treasury. He sent Mr. Jones to New Orleans…

Farewell visit of Garibaldi to Admiral Mundy on board the "Hannibal" at Naples.

Giuseppe Garibaldi's Farewell Visit to Admiral Mundy

Farewell visit of Garibaldi to Admiral Mundy on board the "Hannibal" at Naples.

"Armorists distinguish several points in the escutcheon in order to determine exactly the position of the bearings or charges. A, the dexter chief. B, the precise middle chief. C, the sinister chief. D, the honour point. E, the fess point. F, the nombril point. G, the dexter base. H, the precise middle base. I, the sinister base." -Hall, 1862

Points of the Shield

"Armorists distinguish several points in the escutcheon in order to determine exactly the position of…

Cuttlefish are marine animals of the order Sepiida belonging to the Cephalopoda class. Despite their name, cuttlefish are not fish but molluscs. Cuttlefish have an internal shell (cuttlebone), large W-shaped pupils, and eight arms and two tentacles furnished with denticulated suckers, with which they secure their prey.

Cuttlefish

Cuttlefish are marine animals of the order Sepiida belonging to the Cephalopoda class. Despite their…

Goniatites are extinct ammonoids, shelled cephalopods related to squid, octopus, and belemnites, that form the order Goniatitida. The goniatites all possessed an external shell, which is divided internally into chambers. The animal lived in the largest of the external chambers, and the internal chambers would have been filled with gas, making the animal buoyant in the water.

Coiled Chambered Shell

Goniatites are extinct ammonoids, shelled cephalopods related to squid, octopus, and belemnites, that…

The gars, or garpikes, are members of the Lepisosteiformes (or Semionotiformes), an ancient order of "primitive" ray-finned fish. Fossil gars are found in Europe, South America, and North America, indicating that in times past these fish had a wider distribution than they do today. Gars are considered to be a remnant of a group of rather primitive bony fish that flourished in the Mesozoic, and are most closely related to the bowfin, another archaic fish now found only in North America.

Garpikes Fish

The gars, or garpikes, are members of the Lepisosteiformes (or Semionotiformes), an ancient order of…

A salt mine is an operation involved in the extraction of salt from rock salt or halite. The manufacture of salt in Mason City, West Virginia was started by Albert Edward Smith in 1880.

Salt Mining

A salt mine is an operation involved in the extraction of salt from rock salt or halite. The manufacture…

Cyclops, the representative of a number of lowly forms belonging to the order of Copepods, is one of the commest fresh-water Crustacea. The forward segments of the spindle-shaped body are covered by a large shield or carapace. The feet, are few in number, and like its fabled namesake, it bears an eye in the center of the forehead. Diagram of the cyclops shows the (e.s.) egs, (i) intestine, (ov) reproductive organ.

Cyclops

Cyclops, the representative of a number of lowly forms belonging to the order of Copepods, is one of…

Prawns are crustaceans, belonging to the sub-order Dendrobranchiata. They are similar in appearance to shrimp, but can be distinguished by the gill structure which is branching in prawns (hence the name, dendro="tree"; branchia="gill"), but is lamellar in shrimp.

Prawn

Prawns are crustaceans, belonging to the sub-order Dendrobranchiata. They are similar in appearance…

Cockroaches or roaches are insects of the order Blattaria. This name derives from the Latin word for "cockroach", blatta. Cockroaches live in a wide range of environments around the world. Pest species of cockroaches adapt readily to a variety of environments, but prefer warm conditions found within buildings. Many tropical species prefer even warmer environments and do not fare well in the average household. Roaches are not able to survive in moist areas such as bathrooms and are not able to exit such areas. This diagram shows a dissection of a cockroach with particular note of the allmentary canal (al).

Cockroach

Cockroaches or roaches are insects of the order Blattaria. This name derives from the Latin word for…

Beetles are the group of insects with the largest number of known species. The general anatomy of beetles is quite uniform, although specific organs and appendages may vary greatly in appearance and function between the many families in the order. Like all insects, beetles' bodies are divided into three sections: the head, the thorax, and the abdomen. We see here the long-horned borer beetle showing the larva, pupa, and adult insect.

Beetle

Beetles are the group of insects with the largest number of known species. The general anatomy of beetles…

Scorpions are any arachnid of the order Scorpionida. Unlike the majority of arachnid species, scorpions are viviparous. The young are born one by one, and the brood is carried about on its mother's back until the young have undergone at least one moult. All known Scorpion species possess poison or venom. Scorpions use their venom to kill or paralyze their prey so that it can be eaten; in general it is fast-acting, allowing for effective prey capture.

Scorpion

Scorpions are any arachnid of the order Scorpionida. Unlike the majority of arachnid species, scorpions…