ClipArt ETC
"Among the anceient Romans, a functionary whose duty it was to observe and to interpret, according to traditional rules, the auspices, or reputed natural signs concerning future events."-Whitney, 1902.

Auger

"Among the anceient Romans, a functionary whose duty it was to observe and to interpret, according to…

"Represents a Roman augur, with his litmus or divining staff, observing the signs in the heavens." — Anthon, 1891

Roman augur

"Represents a Roman augur, with his litmus or divining staff, observing the signs in the heavens." —…

A diagram that shows constellations, seasons, equinoxes, solstices and astrological signs.

Seasons etc.

A diagram that shows constellations, seasons, equinoxes, solstices and astrological signs.

"The twelve signs of the zodiac, together with the Sun, and the Earth revolving around him. When the Earth is at A, the Sun will appear to be just entering the sign Aries, because then, when seen from the Earth, he ranges towards certain stars at the beginning of that constellation. When the Earth is at C, the Sun will appear in the opposite part of the heavens, and therefore in the beginning of Libra. The middle line, dividing the circle of the zodiac into equal parts, is the line of the ecliptic." —Comstock, 1850

Zodiac Signs

"The twelve signs of the zodiac, together with the Sun, and the Earth revolving around him. When the…

"Relative distance of the Planets. Having now given a short account of each planet composing the solar system, the relative situation of their several orbits, with the exception of those of the Asteroids, are shown in this figure. The orbits are marked by the signs of each planet, of which the first, or that nearest the Sun, is Mercury, the next Venus, the third the Earth, the fourth Mars then come those of the Asteroids, then Jupiter, then Saturn and lastly Herschel." —Comstock, 1850

Planet Distance

"Relative distance of the Planets. Having now given a short account of each planet composing the solar…

Caractacus was a British Chief that had fought very bravely against the Romans. He was brought to Rome with chains on his hands and feet and set before the emperor of Rome. The wife of Caratacus, who had also been brought a prisoner to Rome, fell upon her knees imploring pity, but Caractacus asked for nothing and exhibited no signs of fear.

Caractacus And Claudius

Caractacus was a British Chief that had fought very bravely against the Romans. He was brought to Rome…

"Electrification produced by rubbing dissimilar bodies together and then separating them. If the insulated glass and leather discs A and B be rubbed together, but not separated, no signs of electrification can be detected; but if the discs be drawn apart a little distance the space betwen them is found to be and electric field, and as they separate farther and farther, electric forces will be found to exist in more and more of the surrounding space, the electrification being indicated by 'lines of force.' " -Hawkins, 1917

Electrification

"Electrification produced by rubbing dissimilar bodies together and then separating them. If the insulated…

Leaves - simple; alternate; edge very finely sharp-toothed. Outline - long and narrow, often "scythe-shaped." Apex - long, taper-pointed. Base - gradually narrowing and pointed or slightly rounded. Leaf/Stem - short. Stipules - (two small, leaf-like appendages at the base of the leaf-stem), not falling off when young, as in most of the willows; moon-shaped, finely toothed, wider than long. Leaf - four to eight inches long; green and smooth above and below (silky-downy when young). Found - on low ground from New England to the Middle States and westward. General Information - A small tree (or sometimes a shrub). The persistent stipules and the length of the leaf furnish ready signs for distinguishing it from S. nigra. Salix from two Celtic words meaning "near" and "water."

Genus Salix, L. (Willow)

Leaves - simple; alternate; edge very finely sharp-toothed. Outline - long and narrow, often "scythe-shaped."…

The complete alphabet of the Boy Scouts' signal code.

Scouts' Signals

The complete alphabet of the Boy Scouts' signal code.

A mouse couple in their turtle-drawn carriage watching a frog post signs.

Mice in a Turtle-Drawn Carriage.

A mouse couple in their turtle-drawn carriage watching a frog post signs.

The Indians and the Highlander. Caption below illustration: "The Scotchman requested that the broad sword should be given to the most alert and most vigorous person in the assembly; and laying bare his neck after he had rubbed it over with magic signs , and muttered a few inarticulate words, he called out, with a loud voice and cheerful air."

Indians and the Highlander

The Indians and the Highlander. Caption below illustration: "The Scotchman requested that the broad…

Vertical section of epidermis of the prepuce. Labels: a, stratum corneum, of very few layers, the stratum lucidum and stratum granulosum not being distinctly represented; b, c, d, and e, the layers f the stratum Malpighi, a certain number of the cells in layers d and e showing signs of segmentation; layers c consists chiefly of prickle or ridge and furrow cells; f, basement membrane; g, cells in cutis vera.

Epidermis

Vertical section of epidermis of the prepuce. Labels: a, stratum corneum, of very few layers, the stratum…

"It is only requisite to exhibit the outward signs of bacchanalian excitement, and the birds will be filled with a sense of false security, so that you may approach within a few yards of them."

Common Dotterel

"It is only requisite to exhibit the outward signs of bacchanalian excitement, and the birds will be…

A cantilever bridge is a bridge built using cantilevers, structures that project horizontally into space, supported on only one end. For small footbridges, the cantilevers may be simple beams; however, large cantilever bridges designed to handle road or rail traffic use trusses built from structural steel, or box girders built from prestressed concrete. The steel truss cantilever bridge was a major engineering breakthrough when first put into practice, as it can span distances of over 1,500 feet (460 m), and can be more easily constructed at difficult crossings by virtue of using little or no falsework.

Cantilever Bridge

A cantilever bridge is a bridge built using cantilevers, structures that project horizontally into space,…

The City of Manila, or simply Manila, is the capital of the Philippines. Seen here is street traffic in the city.

Street traffic in Manila

The City of Manila, or simply Manila, is the capital of the Philippines. Seen here is street traffic…

The wrought-iron signs strap-work tablet was used in modern times.

Wrought-Iron Signs Strap-Work Tablet

The wrought-iron signs strap-work tablet was used in modern times.

The wrought-iron signs strap-work tablet was used in modern times.

Wrought-Iron Signs Strap-Work Tablet

The wrought-iron signs strap-work tablet was used in modern times.

An illustration of a jester surrounded by no trespassing signs.

Jester Trespassing

An illustration of a jester surrounded by no trespassing signs.

"Presumption often ventures quite too near, where danger should awaken wholesome fear" —Northdrop, 1893. A pair of ice skaters approach while another pair of skaters look on at two skaters that have fallen through the ice, near a danger sign, frantically try to get out of the icy waters.

Skating on Thin Ice

"Presumption often ventures quite too near, where danger should awaken wholesome fear" —Northdrop,…

The Sunken Road at the Battle of Antietam. The Battle of Antietam, also known as the Battle of Sharpsburg, was fought on September 17, 1862, near Sharpsburg, Maryland and was the first major battle in the Civil War to take place in the North. This battle was the bloodiest single-day battle in American history, with about 23,000 casualties. The Sunken Road was worn down by years of wagon traffic, which formed a natural trench for the men.

Sunken Road at Battle of Antietam

The Sunken Road at the Battle of Antietam. The Battle of Antietam, also known as the Battle of Sharpsburg,…

Scene at the Sunken Road at the Battle of Antietam. The Battle of Antietam, also known as the Battle of Sharpsburg, was fought on September 17, 1862, near Sharpsburg, Maryland and was the first major battle in the Civil War to take place in the North. This battle was the bloodiest single-day battle in American history, with about 23,000 casualties. The Sunken Road was worn down by years of wagon traffic, which formed a natural trench for the men.

Sunken Road at Battle of Antietam

Scene at the Sunken Road at the Battle of Antietam. The Battle of Antietam, also known as the Battle…

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway alignment changes. The Turn sign or the Curve sign may be combined with the Cross Road sign or the Side Road sign to create a combination Horizontal Alignment/Intersection sign that depicts the condition where an intersection occurs within a turn or curve."

Combination Horizontal Alignment/Intersection, Black and White

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway…

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway alignment changes. The Turn sign or the Curve sign may be combined with the Cross Road sign or the Side Road sign to create a combination Horizontal Alignment/Intersection sign that depicts the condition where an intersection occurs within a turn or curve."

Combination Horizontal Alignment/Intersection, Color

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway…

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway alignment changes. The Turn sign or the Curve sign may be combined with the Cross Road sign or the Side Road sign to create a combination Horizontal Alignment/Intersection sign that depicts the condition where an intersection occurs within a turn or curve."

Combination Horizontal Alignment/Intersection, Outline

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway…

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway alignment changes. The Turn sign or the Curve sign may be combined with the Cross Road sign or the Side Road sign to create a combination Horizontal Alignment/Intersection sign that depicts the condition where an intersection occurs within a turn or curve."

Combination Horizontal Alignment/Intersection, Silhouette

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is 135 degrees or more, the Hairpin Curve sign may be used.

U-Turn, Black and White

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is 135 degrees or more, the Hairpin Curve sign may be used.

U-Turn, Color

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is 135 degrees or more, the Hairpin Curve sign may be used.

U-Turn, Outline

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is 135 degrees or more, the Hairpin Curve sign may be used.

U-Turn, Silhouette

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is approximately 270 degrees, such as on a cloverleaf interchange ramp, the 270-degree Loop sign may be used.

270 Degree Loop, Black and White

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is approximately 270 degrees, such as on a cloverleaf interchange ramp, the 270-degree Loop sign may be used.

270 Degree Loop, Color

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is approximately 270 degrees, such as on a cloverleaf interchange ramp, the 270-degree Loop sign may be used.

270 Degree Loop, Outline

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is approximately 270 degrees, such as on a cloverleaf interchange ramp, the 270-degree Loop sign may be used.

270 Degree Loop, Silhouette

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment Reverse Turn signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that there is a left turn ahead, immediately followed by a right turn.

Reverse Turn, Black and White

The horizontal alignment Reverse Turn signs may be used in advance of situations where the horizontal…

The horizontal alignment Reverse Turn signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that there is a left turn ahead, immediately followed by a right turn.

Reverse Turn, Color

The horizontal alignment Reverse Turn signs may be used in advance of situations where the horizontal…

The horizontal alignment Reverse Turn signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that there is a left turn ahead, immediately followed by a right turn.

Reverse Turn, Outline

The horizontal alignment Reverse Turn signs may be used in advance of situations where the horizontal…

The horizontal alignment Reverse Turn signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that there is a left turn ahead, immediately followed by a right turn.

Reverse Turn, Silhouette

The horizontal alignment Reverse Turn signs may be used in advance of situations where the horizontal…

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that the road ahead curves to the left and then immediately curves back to the right.

Reverse Curve, Black and White

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal…

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that the road ahead curves to the left and then immediately curves back to the right.

Reverse Curve, Color

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal…

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that the road ahead curves to the left and then immediately curves back to the right.

Reverse Curve, Outline

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal…

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that the road ahead curves to the left and then immediately curves back to the right.

Reverse Curve, Silhouette

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal…

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal roadway alignment changes.

Winding Road, Black and White

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal…

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal roadway alignment changes.

Winding Road, Color

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal…

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal roadway alignment changes.

Winding Road, Outline

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal…

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal roadway alignment changes.

Winding Road, Silhouette

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. A One-Direction Large Arrow sign may be used on the outside of the turn or curve. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

One-Direction Large Arrow, Black and White

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. A One-Direction Large Arrow sign may be used on the outside of the turn or curve. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

One-Direction Large Arrow, Color

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. A One-Direction Large Arrow sign may be used on the outside of the turn or curve. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

One-Direction Large Arrow, Outline

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. A One-Direction Large Arrow sign may be used on the outside of the turn or curve. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

One-Direction Large Arrow, Silhouette

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

Chevron Alignment, Black and White

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

Chevron Alignment, Color

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

Chevron Alignment, Outline

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

Chevron Alignment, Silhouette

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment…

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side of an island, obstruction, or gore in the roadway. Traffic separated by this sign may either rejoin or change directions.

Double Arrow, Black and White

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side…

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side of an island, obstruction, or gore in the roadway. Traffic separated by this sign may either rejoin or change directions.

Double Arrow, Color

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side…

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side of an island, obstruction, or gore in the roadway. Traffic separated by this sign may either rejoin or change directions.

Double Arrow, Outline

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side…

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side of an island, obstruction, or gore in the roadway. Traffic separated by this sign may either rejoin or change directions.

Double Arrow, Silhouette

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side…

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection or junction) where the opposing flows of traffic are separated by a median or other physical barrier. The word message DIVIDED HIGHWAY or DIVIDED ROAD sign may be used as an alternate to the symbol sign.

Divided Highway, Black and White

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection…

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection or junction) where the opposing flows of traffic are separated by a median or other physical barrier. The word message DIVIDED HIGHWAY or DIVIDED ROAD sign may be used as an alternate to the symbol sign.

Divided Highway, Color

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection…

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection or junction) where the opposing flows of traffic are separated by a median or other physical barrier. The word message DIVIDED HIGHWAY or DIVIDED ROAD sign may be used as an alternate to the symbol sign.

Divided Highway, Outline

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection…