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Alexander Joseph of Battenberg (April 5, 1857 - November 17, 1893), the first prince (knyaz) of modern Bulgaria, reigning from April 29, 1879 to September 7, 1886.

Alexander of Bulgaria

Alexander Joseph of Battenberg (April 5, 1857 - November 17, 1893), the first prince (knyaz) of modern…

An illustration of the skeletal fossil of Archaeopteryx, the earliest and most primitive bird known. Archaeopteryx lived in the late Jurassic Period around 155–150 million years ago, in what is now southern Germany during a time when Europe was an archipelago of islands in a shallow warm tropical sea, much closer to the equator than it is now.

Archaeopteryx Fossil

An illustration of the skeletal fossil of Archaeopteryx, the earliest and most primitive bird known.…

"The balance is essentially a lever of the first class, having equal arms. The beam carries a pan at each end, one for the weidhts used, the other for the article to be weighed." -Avery 1895

Balance

"The balance is essentially a lever of the first class, having equal arms. The beam carries a pan at…

"Base Ball is a field game played principally in the United States. It originated in the English school-boy game of "rounders;" but it has been so improved and so generally played as to merit its name of "the National game of America." The plaing of baseball has become largely a business or a "profession," and skilled players receive large salaries. As an amateur game, however, it is also most popular."—(Charles Leonard-Stuart, 1911)

Baseball Diamond

"Base Ball is a field game played principally in the United States. It originated in the English school-boy…

"Showing how an improvised apparatus may be used for a broken radius. This temporary dressing consists of two pieces of oak bark for splints, with grass for padding, and is secured in place by a boy's long stocking and a pocket handkerchief." — Blaisedell, 1904

Boy with dressing

"Showing how an improvised apparatus may be used for a broken radius. This temporary dressing consists…

St. Louis, Missouri is the home of the first rail and road bridge to cross the Mississippi River, the Eads Bridge, which was completed in 1874.

Eads Bridge

St. Louis, Missouri is the home of the first rail and road bridge to cross the Mississippi River, the…

"... shows one of the commonest (sic) forms in which this kind of lever appears,-the crowbar. The power is applied at the handle. The weight is at the other end, and consists of something to be moved. The fulcrum is a stone on which the crowbar rests." —Quackenbos 1859

Crowbar

"... shows one of the commonest (sic) forms in which this kind of lever appears,-the crowbar. The power…

A lever of the first class

First Class Lever

A lever of the first class

"A lever is an inflexible bar freely movable about a fixed axis called the fulcrum. If the fulcrum is between the power and weight, the lever is of the first class." — Avery, 1895

First Class Lever

"A lever is an inflexible bar freely movable about a fixed axis called the fulcrum. If the fulcrum is…

"First class lever." -Comstock 1850

First class lever

"First class lever." -Comstock 1850

"George Stephenson is emphatically the engineer to whose intelligence and perseverance we owe the introduction of railroads into England, and consequently into the United States. It was at Killingworth Colliery that he constructed his first locomotive." -Lupton

George Stephenson's First Locomotive

"George Stephenson is emphatically the engineer to whose intelligence and perseverance we owe the introduction…

"This is a form consisting of six rectangular vertical faces each of which intersects two of the horizontal axes equally and the intermediate horizontal axis at one-half this distance." — Ford, 1912

Prism of the first order

"This is a form consisting of six rectangular vertical faces each of which intersects two of the horizontal…

The first money coined in the United States.

First Money Coined in the United States

The first money coined in the United States.

"First class lever." -Comstock 1850

First-class Lever

"First class lever." -Comstock 1850

"Hexagonal prism of the first order, consisting of six faces also parallel to the hexad axis, but perpendicular to the other set of three vertical planes of symmetry." -The Encyclopedia Britannica 1910

Hexagonal Prism of the First Order

"Hexagonal prism of the first order, consisting of six faces also parallel to the hexad axis, but perpendicular…

"In straight levers of the first kind, the fulcrum is between the power and the resistance, as in fig 1, where F is the fulcrum of the lever AB; P is the power, and W the weight or resistance."—Pettigrew, 1874

First Kind of Lever

"In straight levers of the first kind, the fulcrum is between the power and the resistance, as in fig…

The first seal of New Hampshire.

First Seal of New Hampshire

The first seal of New Hampshire.

"For the kingdom of heaven is like unto a man that was a householder, who went out early in the morning to hire laborers into his vineyard. And when he had agreed with the laborers for a shilling a day, he sent them into his vineyard." Matthew 20:1-2 ASV <p>Illustration of the master, or householder, hiring three more workers to join the laborers already in the fields. One worker leans against a wall, while two others sit on the ground, one with a pick-axe. Workers in the background can be seen carrying grapes and working. The householder leans on a staff.

The Parable of the Householder Hiring Laborers to Work in the Vineyard

"For the kingdom of heaven is like unto a man that was a householder, who went out early in the morning…

A pod of Kennerly's First Early peas.

Kennerly's First Early peas

A pod of Kennerly's First Early peas.

A printing press is a mechanical device for applying pressure to an inked surface resting upon a medium (such as paper or cloth), thereby transferring an image. The systems involved were first assembled in Germany by the goldsmith Johann Gutenberg in ca. 1439.

Printing Press

A printing press is a mechanical device for applying pressure to an inked surface resting upon a medium…

"The prism of the first order consists of four rectangular vertical faces, each of which intersects the two horizontal crystallographic axes equally." &mdash; Ford, 1912

First order prism

"The prism of the first order consists of four rectangular vertical faces, each of which intersects…

"The pyramid of the first order is a form consisting of eight isoceles triangular faces, each of which interesects all three crystallographic axes, the intercepts upon the two horizontal axes being equal." &mdash; Ford, 1912

First order pyramid

"The pyramid of the first order is a form consisting of eight isoceles triangular faces, each of which…

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.

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…

"Improvised Hand Seats: the Three-Handed Seat. THe usefull three-handed seat is made by one bearer grasping the free wrist of the other bearer and placing his free hand on his partner's shoulder, in order to support the patient's back." &mdash; Blaisedell, 1904

Hand seat

"Improvised Hand Seats: the Three-Handed Seat. THe usefull three-handed seat is made by one bearer grasping…

"Showing how the Improvised Three-Handed Seat may be used to carry an Injured Person. The picture also shows how a boy's broken leg may be treated with an improvised apparatus made of pieces of oak bark for splints, padded with graass and held in place by two pocket handkerchiefs." &mdash; Blaisedell, 1904

Hand seat

"Showing how the Improvised Three-Handed Seat may be used to carry an Injured Person. The picture also…

"A sling for the arm made from a triangular bandage." &mdash;Davison, 1910

Boy with sling

"A sling for the arm made from a triangular bandage." —Davison, 1910

"Showing how a pillow, an inside coat, a "sweater", or a blanket may be used as a temporary splint on a broken leg." &mdash; Blaisedell, 1904

Temporary splint

"Showing how a pillow, an inside coat, a "sweater", or a blanket may be used as a temporary splint on…

"Showing how an improvised apparatus, or temporary tourniquet, may be adapted to arrest bleeding from an artery in the arm. This apparatus consists of a potato held in place over the partery by a pocket handkerchief used as a band. A stick, picked up on the ground, is inserted benearth the band on the opposite side of the limb and used as a lever to press the potato firmly against the artery." &mdash; Blaisedell, 1904

Tourniquet

"Showing how an improvised apparatus, or temporary tourniquet, may be adapted to arrest bleeding from…

An illustration of George Washington lighting a cannon at the siege of Yorktown.

George Washington at Siege of Yorktown

An illustration of George Washington lighting a cannon at the siege of Yorktown.

Washington Press, one of the earliest used in the United States.

Washington Press

Washington Press, one of the earliest used in the United States.

"The wheel and axle consists of a wheel united to a cylinder in such a way that they may turn together on a common axis. It is a modified lever of the first or second class." -Avery 1895

Wheel and Axle with Rope and Bucket

"The wheel and axle consists of a wheel united to a cylinder in such a way that they may turn together…