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…

The Greenback Group (Pro-Inflation) made up of Senators Logan, Morton, Cameron, and Carpenter shown as "peevish schoolboys."

Greenback Group Caricature

The Greenback Group (Pro-Inflation) made up of Senators Logan, Morton, Cameron, and Carpenter shown…

An illustration of a group of male faces.

Faces of a Group of Men

An illustration of a group of male faces.

The argonauts (genus Argonauta, the only extant genus in the Argonautidae family) are a group of pelagic octopuses. They are also called paper nautiluses, referring to the paper-thin eggcase that females secrete. This structure lacks the gas-filled chambers present in chambered nautilus shells and is not a true cephalopod shell, but rather an evolutionary innovation unique to the genus Argonauta. Female argonauts produce a laterally-compressed calcareous eggcase in which they reside.

Paper Nautilus Octopuses

The argonauts (genus Argonauta, the only extant genus in the Argonautidae family) are a group of pelagic…

The argonauts (genus Argonauta, the only extant genus in the Argonautidae family) are a group of pelagic octopuses. They are also called paper nautiluses, referring to the paper-thin eggcase that females secrete. This structure lacks the gas-filled chambers present in chambered nautilus shells and is not a true cephalopod shell, but rather an evolutionary innovation unique to the genus Argonauta. Argonauts use tentacles to grab prey and drag it toward the mouth.

Paper Nautilus Octopuses

The argonauts (genus Argonauta, the only extant genus in the Argonautidae family) are a group of pelagic…

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 group of related genera is call a family. Schistocerca melanocera Stol from Charles Island. Locust taken on the Galapagos Islands, Pacific Ocean; are all decended from a common ancestor, and are scattered over the various islands and varying is size and markings.

Locust

A group of related genera is call a family. Schistocerca melanocera Stol from Charles Island. Locust…

A group of related genera is call a family. S. intermedia borealis Snodgrass from Abingdon and Bindloe Islands. Locust taken on the Galapagos Islands, Pacific Ocean; are all decended from a common ancestor, and are scattered over the various islands and varying is size and markings

Locust

A group of related genera is call a family. S. intermedia borealis Snodgrass from Abingdon and Bindloe…

A group of related genera is call a family. S. intermedia Snodgrass from Duncan Islands. Locust taken on the Galapagos Islands, Pacific Ocean; are all decended from a common ancestor, and are scattered over the various islands and varying is size and markings

Locust

A group of related genera is call a family. S. intermedia Snodgrass from Duncan Islands. Locust taken…

A group of related genera is call a family. S. literosa Walker from Chatham Island. Locust taken on the Galapagos Islands, Pacific Ocean; are all decended from a common ancestor, and are scattered over the various islands and varying is size and markings

Locust

A group of related genera is call a family. S. literosa Walker from Chatham Island. Locust taken on…

A group of related genera is call a family. S. melanocera lineata Snodgrass from Albemarle Island. Locust taken on the Galapagos Islands, Pacific Ocean; are all decended from a common ancestor, and are scattered over the various islands and varying is size and markings

Locust

A group of related genera is call a family. S. melanocera lineata Snodgrass from Albemarle Island. Locust…

A group of related genera is call a family. S. melanocera immaculata Snodgrass from Indefatigable Island. Locust taken on the Galapagos Islands, Pacific Ocean; are all decended from a common ancestor, and are scattered over the various islands and varying is size and markings

Locust

A group of related genera is call a family. S. melanocera immaculata Snodgrass from Indefatigable Island.…

Paramecia (Slipper Animalcule), also known as Lady Slippers, due to their appearance, are a group of unicellular ciliate protozoa. Paramecia aurelia, a ciliate infusorian, (c) cilia; (c.v.) pulsating vacuoles; (f) food particles; (g) fullet; (m) buccal groove; (n) nucleus.

Paramecia

Paramecia (Slipper Animalcule), also known as Lady Slippers, due to their appearance, are a group of…

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…

Carpenter bees are large, hairy bees distributed worldwide. Their name comes from the fact that nearly all species build their nests in burrows in dead wood, bamboo, or structural timbers. In several species, the females live in tunnels alongside their own daughters or sisters, creating a sort of social group. They use wood bits to form partitions between the cells in the nest. A few species bore holes in wood dwellings. Since the tunnels are near the surface, structural damage is generally minor or nonexistent.

Carpenter Bee

Carpenter bees are large, hairy bees distributed worldwide. Their name comes from the fact that nearly…

An illustration of a large group of men in a tight formation.

Men in Tight Fomation

An illustration of a large group of men in a tight formation.

An illustration of a group of six children, four girls and two boys, ice skating on an open pond in the winter.

Six Children Ice Skating on Pond

An illustration of a group of six children, four girls and two boys, ice skating on an open pond in…

An illustration of a group of Athenian youth on horses.

Athenian Youth on Horses

An illustration of a group of Athenian youth on horses.

An illustration of a group of knights charging on horseback with lances.

Knights Charging with Lances

An illustration of a group of knights charging on horseback with lances.

An illustration of a boy wearing a hat and holding a sword while playing with a group of dogs.

Boy with Hat & Sword Playing with Dogs

An illustration of a boy wearing a hat and holding a sword while playing with a group of dogs.

"Grallaria rex. GRALLARIA. A genus of formicarian passerine birds, a leading group of South American ant-thrushes." -Whitney, 1911

Antpitta

"Grallaria rex. GRALLARIA. A genus of formicarian passerine birds, a leading group of South American…

"Gregarina of Earthworm. GREGARINIDAE. A family or other major group of endoplastic protozoans, having spheroidal, ovoid, or elongated bodies, sometimes with a segmental constriction, and occasionally one end of the body beaked with an epimerite bearing curved horny spines." -Whitney, 1911

Gregarina of Earthworm

"Gregarina of Earthworm. GREGARINIDAE. A family or other major group of endoplastic protozoans, having…

"Gregarina of Earthworm, encysted. GREGARINIDAE. A family or other major group of endoplastic protozoans, having spheroidal, ovoid, or elongated bodies, sometimes with a segmental constriction, and occasionally one end of the body beaked with an epimerite bearing curved horny spines." -Whitney, 1911

Gregarina Encysted

"Gregarina of Earthworm, encysted. GREGARINIDAE. A family or other major group of endoplastic protozoans,…

"Gregarina, contents divided into pseudo-navicellae. GREGARINIDAE. A family or other major group of endoplastic protozoans, having spheroidal, ovoid, or elongated bodies, sometimes with a segmental constriction, and occasionally one end of the body beaked with an epimerite bearing curved horny spines." -Whitney, 1911

Gregarina

"Gregarina, contents divided into pseudo-navicellae. GREGARINIDAE. A family or other major group of…

"Gregarina, contents divided into pseudo-navicellae. GREGARINIDAE. A family or other major group of endoplastic protozoans, having spheroidal, ovoid, or elongated bodies, sometimes with a segmental constriction, and occasionally one end of the body beaked with an epimerite bearing curved horny spines." -Whitney, 1911

Gregarina

"Gregarina, contents divided into pseudo-navicellae. GREGARINIDAE. A family or other major group of…

"Gregarina, free pseudo-navicellae. GREGARINIDAE. A family or other major group of endoplastic protozoans, having spheroidal, ovoid, or elongated bodies, sometimes with a segmental constriction, and occasionally one end of the body beaked with an epimerite bearing curved horny spines." -Whitney, 1911

Gregarina

"Gregarina, free pseudo-navicellae. GREGARINIDAE. A family or other major group of endoplastic protozoans,…

"Gregarina, their free amoebiform contents. GREGARINIDAE. A family or other major group of endoplastic protozoans, having spheroidal, ovoid, or elongated bodies, sometimes with a segmental constriction, and occasionally one end of the body beaked with an epimerite bearing curved horny spines." -Whitney, 1911

Amoebiform Gregarina

"Gregarina, their free amoebiform contents. GREGARINIDAE. A family or other major group of endoplastic…

This sign is used to indicate that a group campground is located nearby.

Group Camping, Black and White

This sign is used to indicate that a group campground is located nearby.

This sign is used to indicate that a group campground is located nearby.

Group Camping, Color

This sign is used to indicate that a group campground is located nearby.

This sign is used to indicate that a group campground is located nearby.

Group Camping, Outline

This sign is used to indicate that a group campground is located nearby.

This sign is used to indicate that a group campground is located nearby.

Group Camping, Silhouette

This sign is used to indicate that a group campground is located nearby.

This sign is used to indicate that an area for group picnicking is located nearby.

Group Picnicking, Black and White

This sign is used to indicate that an area for group picnicking is located nearby.

This sign is used to indicate that an area for group picnicking is located nearby.

Group Picnicking, Black and White

This sign is used to indicate that an area for group picnicking is located nearby.

This sign is used to indicate that an area for group picnicking is located nearby.

Group Picnicking, Black and White

This sign is used to indicate that an area for group picnicking is located nearby.

This sign is used to indicate that an area for group picnicking is located nearby.

Group Picnicking, Black and White

This sign is used to indicate that an area for group picnicking is located nearby.

This is the interior of the Crystal Palace, where many people are gathered. A large fountain is in the hall, as well as a group of trees and bushes. A statue of a woman on a horse is also seen. An elaborate wrought iron gate is shown to the left. The ceiling is made of glass, allowing sunlight to filter in.

Crystal Palace Interior

This is the interior of the Crystal Palace, where many people are gathered. A large fountain is in the…

This wood sculpture is a design of a group of angels, carrying the slaughtered innocents of Herod's massacre heavenward, and comforting an unfortunate mother.

Massacre of the Innocents

This wood sculpture is a design of a group of angels, carrying the slaughtered innocents of Herod's…

This sculpture is entitled "charity". It is part of a monumental group.

Sculpture

This sculpture is entitled "charity". It is part of a monumental group.

This sculpture is a group of figures that represent repentance, faith and resignation in the Christian religion.

Sculpture

This sculpture is a group of figures that represent repentance, faith and resignation in the Christian…

This clock is made out of bronze with a design of a group of figures supporting a starry globe, with serpent clock hands.

Clock

This clock is made out of bronze with a design of a group of figures supporting a starry globe, with…

This inkstand is ornamented with a group of fish at the top.

Inkstand

This inkstand is ornamented with a group of fish at the top.

This group statuary represents a man defending himself from a tigress, whose cub he has taken.

Group of Statuary

This group statuary represents a man defending himself from a tigress, whose cub he has taken.

An illustration of a group of adults and children standing near two windmills.

Group of Adults & Children Standing Near Windmills

An illustration of a group of adults and children standing near two windmills.

An illustration of a group of kids forming a parade to vacationland.

Parade of Children to Vacationland

An illustration of a group of kids forming a parade to vacationland.

An illustration of a queen and king surrounded by a group of people and dogs running around their feet.

Queen and King Surrounded by People

An illustration of a queen and king surrounded by a group of people and dogs running around their feet.

An illustration of a group of women dancing.

Women Dancing

An illustration of a group of women dancing.

An illustration of a group of male cooks dancing in a line.

Male Cooks Dancing in a Line

An illustration of a group of male cooks dancing in a line.

An illustration of a king and queen sitting the head of a large table surrounded by people.

King & Queen Sitting at Table

An illustration of a king and queen sitting the head of a large table surrounded by people.

An illustration of a group of kitchen staff carrying large quantities of food.

Kitchen Staff Carrying Food

An illustration of a group of kitchen staff carrying large quantities of food.

An illustration of a king and queen holding hands and dancing with a large group of people.

King & Queen Dancing with Group of People

An illustration of a king and queen holding hands and dancing with a large group of people.

An illustration of a group of pirates looking off into the horizon.

Pirates Looking into the Horizon

An illustration of a group of pirates looking off into the horizon.

"Bat, one of the group of wing-handed, flying mammals, having the fore-limb peculiarly modified so as to serve for flight, and constituting the order Cheiroptera." -Vaughan, 1906

Bat Head

"Bat, one of the group of wing-handed, flying mammals, having the fore-limb peculiarly modified so as…

The pug-nosed bat. "Bat, one of the group of wing-handed, flying mammals, having the fore-limb peculiarly modified so as to serve for flight, and constituting the order Cheiroptera." -Vaughan, 1906

Pug-Nosed Bat

The pug-nosed bat. "Bat, one of the group of wing-handed, flying mammals, having the fore-limb peculiarly…

The head of the chin leafed bat. "Bat, one of the group of wing-handed, flying mammals, having the fore-limb peculiarly modified so as to serve for flight, and constituting the order Cheiroptera." -Vaughan, 1906

Chin Leafed Bat Head

The head of the chin leafed bat. "Bat, one of the group of wing-handed, flying mammals, having the fore-limb…

The head of the flower-nosed bat. "Bat, one of the group of wing-handed, flying mammals, having the fore-limb peculiarly modified so as to serve for flight, and constituting the order Cheiroptera." -Vaughan, 1906

Flower-Nosed Bat Head

The head of the flower-nosed bat. "Bat, one of the group of wing-handed, flying mammals, having the…

An illustration of a group of adults and children standing in front of a wind powered ship.

Group Standing in Front of Ship

An illustration of a group of adults and children standing in front of a wind powered ship.

Lamniformes is an order of sharks, also known as mackerel sharks (which may also be used to refer to the sub-group of Lamniformes, Lamnidae). It includes some of the most familiar species of sharks, such as the great white shark, and some extremely rare types, such as the megamouth shark.

Mackerel Shark

Lamniformes is an order of sharks, also known as mackerel sharks (which may also be used to refer to…

Ginkgo also known as the Maidenhair Tree after Adiantum, is a unique species of tree with no close living relatives. The ginkgo is classified in its own division, the Ginkgophyta, comprising the single class Ginkgoopsida, order Ginkgoales, family Ginkgoaceae, genus Ginkgo and is the only extant species within this group. It is one of the best-known examples of a living fossil, because Ginkgoales other than G. biloba are not known from the fossil record after the Pliocene.

Ginkgo

Ginkgo also known as the Maidenhair Tree after Adiantum, is a unique species of tree with no close living…

"Bill small, short, straight, very acute, more or less compressed, the lateral outlines usually a little concave, those of culmen and gonys straight; commissure straight to the slight angulation. Base of bill thickly beset with a ruff of antrorse plumules, concealing the small nasal fossae and round nostrils. Wings longer than tail, pointed by first 3 primaries. Tail rather long for this group, forked. Feet small and weak, but tarsi longer than middle toes without claw; lateral toes of equal lengths, their claw-tips falling beyond base of middle claw. Hind claw much longer, stouter and more curved than the middle, exceeding its digit in length. Size small; plumage streaky with dusky, white, and flaxen colors, crown crimson, face and throat blackish; sexes otherwise dissimilar; with rosy or carmine on breast, wanting in. Scarcely different from Linota (flavirostris, etc.) the pattern of coloration being the most available distinction." Elliot Coues, 1884

Red-poll Linnets

"Bill small, short, straight, very acute, more or less compressed, the lateral outlines usually a little…

An illustration of a group of adults and children, standing together in a group talking.

Group of Adults & Children Talking

An illustration of a group of adults and children, standing together in a group talking.