View of Fort Duquesne in the distance

Fort Duquesne

View of Fort Duquesne in the distance

View of Mount Vernon, home of George Washington

Mount Vernon

View of Mount Vernon, home of George Washington

Kinura, side view

Kinura

Kinura, side view

Kinura, front view

Kinura

Kinura, front view

Tower of London, Bird's eye view

Tower of London, Bird's eye view

Tower of London, Bird's eye view

Hyenas look like dogs, but are more closely related to cats and civets. Their front legs are longer than the rear ones, causing a sloping appearance. They tend to scavenge at night, but may also hunt for food.

Striped Hyena

Hyenas look like dogs, but are more closely related to cats and civets. Their front legs are longer…

The seal is an aquatic mammal, whose limbs are formed into flippers. The tail tapers at the end of the body. The front flippers are used as paddles while the rear paws help to steer the animal.

Seal

The seal is an aquatic mammal, whose limbs are formed into flippers. The tail tapers at the end of the…

The eyes of the mole are very small, but its hearing and smell are acute. Its fur is fine and soft, and doesn't retain dirt although it is constantly surrounded by it. Its front paws are very large and strong and used for digging.

Mole

The eyes of the mole are very small, but its hearing and smell are acute. Its fur is fine and soft,…

Hares are larger than rabbits, with longer ears and hind legs. They live above ground in nests. Hares have more than four front sharp teeth.

Hare

Hares are larger than rabbits, with longer ears and hind legs. They live above ground in nests. Hares…

When irritated, the neck of a cobra swells at the same time it raises the front part of its body vertically, holding it straight and rigid.

Cobra

When irritated, the neck of a cobra swells at the same time it raises the front part of its body vertically,…

White House in Washington, D.C., early 1900s view

White House, Early 1900s

White House in Washington, D.C., early 1900s view

A Calash is a light carriage on low wheels, seats 4 inside, and can, through a movable top and front, be used as either a closed or open vehicle.

Calash

A Calash is a light carriage on low wheels, seats 4 inside, and can, through a movable top and front,…

The seal is an aquatic mammal, whose limbs are formed into flippers. The tail tapers at the end of the body. The front flippers are used as paddles while the rear paws help to steer the animal.

Seal

The seal is an aquatic mammal, whose limbs are formed into flippers. The tail tapers at the end of the…

The back view of a hummingbird.

Hummingbird

The back view of a hummingbird.

Argonaut, sectional view submerged, 1901. Man in conning-tower making observations. Second man steering the third wheel which rests on the ocean bottom. Water tanks are filled when descending and pumped dry when ready to come up.

Argonaut, sectional view

Argonaut, sectional view submerged, 1901. Man in conning-tower making observations. Second man steering…

Argonaut, side view submerged, 1901. Key: C-driving wheel, E-rudder and guiding wheel, G-air lock, K-compartment for searchlight, L-forward lookout compartment, M-gasoline tanks, N-compressed air reserve, O-water ballast, S-conning-tower, T-compass, U-outside steering gear.

Argonaut, side view

Argonaut, side view submerged, 1901. Key: C-driving wheel, E-rudder and guiding wheel, G-air lock, K-compartment…

Telescopic view of the moon, 1901.

Moon

Telescopic view of the moon, 1901.

House front

House

House front

House front

House

House front

A cylinder is a body of uniform diameter throughout its entire length, whose ends are equal parallel circles.

Cylinder

A cylinder is a body of uniform diameter throughout its entire length, whose ends are equal parallel…

Illustration of the picture plane and the ground plane.

Perspective terms

Illustration of the picture plane and the ground plane.

Straightforward front stroke.

Polo

Straightforward front stroke.

Nearside front stroke.

Polo

Nearside front stroke.

In the season of 1915 the 8-cylinder car proved an absorbing topic for automobile engineers and experts, as well as for the layman, and many 8-cylinder cars were speedily rushed upon the market. Adams, 1919

8-Cylinder car

In the season of 1915 the 8-cylinder car proved an absorbing topic for automobile engineers and experts,…

Section view of De Dion French automobile.

De Dion

Section view of De Dion French automobile.

Sectional view of an Amphitheater.

Amphitheater

Sectional view of an Amphitheater.

View of the Boston Massacre from an old print engraved, printed, and sold by Paul Revere, Boston.

Boston Massacre by Paul Revere

View of the Boston Massacre from an old print engraved, printed, and sold by Paul Revere, Boston.

Front of a farmhouse.

Farmhouse

Front of a farmhouse.

From a chart of "Modern fashionable carriages and vehicles in general use," 1893.

Falling front coach

From a chart of "Modern fashionable carriages and vehicles in general use," 1893.

Rear view of hand holding a pen.

Hand holding a pen

Rear view of hand holding a pen.

Front view of hand holding a pen.

Hand holding a pen

Front view of hand holding a pen.

Front of a check for 100 Dollars.

Check

Front of a check for 100 Dollars.

View of the Paris Bourse.

Paris Bourse

View of the Paris Bourse.

Jersey cow, side view.

Jersey Cow

Jersey cow, side view.

West front view of the Cologne Cathedral in Germany.

Cologne Cathedral

West front view of the Cologne Cathedral in Germany.

Front view of a stone house.

House

Front view of a stone house.

Side view of a stone house.

House

Side view of a stone house.

Internal-combustion engine, side view.

Gas Engine, Internal-Combustion Engine

Internal-combustion engine, side view.

Internal-combustion engine (sectional view)

Gas Engine, Internal-Combustion Engine

Internal-combustion engine (sectional view)

View of the amphitheatre at Pompeii.

Amphitheatre

View of the amphitheatre at Pompeii.

The side view of the jaw of a three year old colt.

Horse jaw

The side view of the jaw of a three year old colt.

The side view of the jaw of a four year old colt.

Horse jaw

The side view of the jaw of a four year old colt.

View of a healthy foot. Key: A) frog, D) sole, E) bars

Horse's foot

View of a healthy foot. Key: A) frog, D) sole, E) bars

External features of a grasshopper , dorsal view.

Grasshopper

External features of a grasshopper , dorsal view.

Air tubes and air sacs of grasshopper, lateral view

Grasshopper

Air tubes and air sacs of grasshopper, lateral view

Air tubes and air sacs of grasshopper, ventral view

Grasshopper

Air tubes and air sacs of grasshopper, ventral view

Internal anatomy of a grasshopper

Grasshopper

Internal anatomy of a grasshopper

The metathorax of the May beetle from the front.

May Beetle

The metathorax of the May beetle from the front.

Side view of internal structures of earthworm.

Earthworm

Side view of internal structures of earthworm.

Dorsal view of internal structures of earthworm after cutting through the dorsal wall lengthwise and turning it outward.

Earthworm

Dorsal view of internal structures of earthworm after cutting through the dorsal wall lengthwise and…

Internal structures of the body of a clam, side view.

Clam

Internal structures of the body of a clam, side view.

Limpets are found along the shore. they are gastropods with low conical shells. this is a surface view.

Limpet

Limpets are found along the shore. they are gastropods with low conical shells. this is a surface view.

Limpets are found along the shore. they are gastropods with low conical shells. This is a side view.

Limpet

Limpets are found along the shore. they are gastropods with low conical shells. This is a side view.

A side view of a frog's internal structure.

Frog

A side view of a frog's internal structure.

A ventral view of a frog's internal structure.

Frog

A ventral view of a frog's internal structure.

A ventral view of a frog's internal nervous system.

Frog

A ventral view of a frog's internal nervous system.

Moles are well fitted for digging by the very large front feet and strong muscles of the front legs. Th eyes have become rudimentary because they live in darkness.

Mole

Moles are well fitted for digging by the very large front feet and strong muscles of the front legs.…

Tapirs are found in South America. They have four toes in front and three behind. The snout is prolonged.

Tapir

Tapirs are found in South America. They have four toes in front and three behind. The snout is prolonged.

In the Crane Fly, only the front pair of wings is present.

Crane Fly

In the Crane Fly, only the front pair of wings is present.

The dugong is closeley related to the manatee. It has no hind limbs, but its forelimbs are converted into paddles. Its nostrils are placed at the front of the head.

Dugong

The dugong is closeley related to the manatee. It has no hind limbs, but its forelimbs are converted…