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Eolian type of cross-bedding in ancient limestones, formed of uniform lime-sand grains south of St. Louis.

Eolian Cross-bedding

Eolian type of cross-bedding in ancient limestones, formed of uniform lime-sand grains south of St.…

Different forms of Cross Fitchy Gules (a red tinctured Cross of St. James).

Cross Fitchy Gules

Different forms of Cross Fitchy Gules (a red tinctured Cross of St. James).

Cross-section of the Michigan Basin based on well sections. Owing to the exaggeration of the vertical scale, the folds appear more prominent than they are in reality.

Michigan Basin

Cross-section of the Michigan Basin based on well sections. Owing to the exaggeration of the vertical…

Cross-sections of shallow basins, separated a) by a simple anticline, b) by two anticlines and a syncline.

Shallow Basins

Cross-sections of shallow basins, separated a) by a simple anticline, b) by two anticlines and a syncline.

North-south cross-section of the St. Gothard Massif, Switzerland, showing the fan-folds.

St. Gothard Massif, Switzerland

North-south cross-section of the St. Gothard Massif, Switzerland, showing the fan-folds.

Cross-section of a part of the West Alps, south of Lake Geneva, mainly in France.

West Alps, South of Lake Geneva

Cross-section of a part of the West Alps, south of Lake Geneva, mainly in France.

Cross-section of the Caucasus along the Grusinian military road. Dark beds are lava streams.

Caucasus

Cross-section of the Caucasus along the Grusinian military road. Dark beds are lava streams.

Section through North Hill, Kingston, N.Y. showing the overthrust which led to a repetition of the strata.

North Hill Overthrust

Section through North Hill, Kingston, N.Y. showing the overthrust which led to a repetition of the strata.

A series of diagrams showing the development of the Chief Mountain thrust. The older rocks from which the mountains are cut are represented by cross-lines, the younger rocks of the plains in white.

The Chief Mountain Thrust of Montana

A series of diagrams showing the development of the Chief Mountain thrust. The older rocks from which…

Cross-section of the Black Hills dome, showing the present structure and topography and the former continuation of the beds.

Black Hills Dome

Cross-section of the Black Hills dome, showing the present structure and topography and the former continuation…

Cross-section of the Michigan Basin showing the rimming cuestas which are largely submerged.

Michigan Basin

Cross-section of the Michigan Basin showing the rimming cuestas which are largely submerged.

"In heraldry, forked; having the extremities divided into two: said of any bearing, especially of a cross." -Whitney, 1911

Cross Fourché

"In heraldry, forked; having the extremities divided into two: said of any bearing, especially of a…

"Nautical, on men-of-war, a pair of strong frames of oak made in the form of a gallows, fixed between the fore and main hatchways, with concave cross-beams called gallows-tops tenoned on to the uprights, to support spare topmasts, yards, booms, boats, etc." -Whitney, 1911

Gallows-Bitts

"Nautical, on men-of-war, a pair of strong frames of oak made in the form of a gallows, fixed between…

The Kearny Cross was a military decoration of the United States Army, which was first established in 1862 during the opening year of the American Civil War. The original decoration was known as the Kearny Medal and was adopted as an unofficial medal by the officers of the 1st Division, 3rd Corps, of the Union Army of the Potomac, which had served under Major General Philip Kearny.

Kearny Cross

The Kearny Cross was a military decoration of the United States Army, which was first established in…

Cross hatched damaskeening used in heraldry. "Damaskeening is the name given to minute decoration intended to enliven the various tinctures without interfering with the effect of the colours or altering the coat." -Whitney, 1911

Cross Hatched Damaskeening

Cross hatched damaskeening used in heraldry. "Damaskeening is the name given to minute decoration intended…

The United States Capitol serves as the seat of government for the United States Congress, the legislative branch of the U.S. federal government. It is located in Washington, D.C., on top of Capitol Hill at the eastern end of the National Mall. Although not in the geographic center of the District of Columbia, the Capitol is the origin by which the quadrants of the district are divided. Officially, both the east and west sides of the Capitol are referred to as "fronts." Historically, however, the east front was initially the side of the building intended for the arrival of visitors and dignitaries.

Capitol Building

The United States Capitol serves as the seat of government for the United States Congress, the legislative…

An landscape illustrating a house set behind a hill.

House Behind a Hill

An landscape illustrating a house set behind a hill.

The old donjon (tower or keep) of the Godesburg surmounts on the hill of the same name sits but a little distance from Bonn. Some say the hill itself was anciently devoted to the worship of Mercury while others maintain that the early structure known to have stood for was an open court of justice, of German tribes.

Godesburg

The old donjon (tower or keep) of the Godesburg surmounts on the hill of the same name sits but a little…

Schloss Hohenaschau, is the dominating feature in the town of Aschau im Chiemgau in Bavaria. The huge castle was first built around 1165. This picturesque castle is situated on a hill, overlooking the Prien River. The rear facade of Schloss Hohenaschau, although not as ornate as the front side of the castle, is still quite impressive. From some views, the castle appears to grow directly out of a rock cliff.

Castle of Hohenaschau

Schloss Hohenaschau, is the dominating feature in the town of Aschau im Chiemgau in Bavaria. The huge…

"Cariama cristata, the Seriem&aacute, or Crested Screamer, extending from Pernambuco to Paraguay and Matto Grosso, is ochreous-grey above with zig-zag umber markings, and whitish below with brown stripes. Vertical feathers on the lores form a conspicuous crest, while those of the neck and throat are long and loose; interrupted white bands cross the remiges, and the bases and tips of the lateral rectrices. The iris is yellow, the beak and feet are red, the naked orbits greenish. The female is yellower, and exhibits less crest." A. H. Evans, 1900

Seriemá

"Cariama cristata, the Seriemá, or Crested Screamer, extending from Pernambuco to Paraguay and…

An illustration of a May day celebration. May Day occurs on May 1 and refers to any of several public holidays. In many countries, May Day is synonymous with International Workers' Day, or Labour Day, which celebrates the social and economic achievements of the labour movement. As a day of celebration the holiday has ancient origins, and it can relate to many customs that have survived into modern times. Many of these customs are due to May Day being a cross-quarter day, meaning that (in the Northern Hemisphere where it is almost exclusively celebrated) it falls approximately halfway between the spring equinox and summer solstice.

May Day Celebration

An illustration of a May day celebration. May Day occurs on May 1 and refers to any of several public…

"Tender-handed stroke a nettle, And it stings you for your pains; Grasp it like a man of mettle, And it soft as silk remains." -Aaron Hill, 1800s

Aaron Hill Rebus

"Tender-handed stroke a nettle, And it stings you for your pains; Grasp it like a man of mettle, And…

"And they compel one Simon a Cyrenian, who passed by, coming out of the country, the father of Alexander and Rufus, to bear his cross." Mark 15:21 KJV

Simon Compelled to Help Jesus Bear the Cross

"And they compel one Simon a Cyrenian, who passed by, coming out of the country, the father of Alexander…

"And it was about the sixth hour, and there was a darkness over all the earth until the ninth hour. And the sun was darkened, and the veil of the temple was rent in the midst. And when Jesus had cried with a loud voice, he said, Father, into thy hands I commend my spirit: and having said thus, he gave up the ghost." Luke 23-:44-46 KJV

The Crucifixion of Christ

"And it was about the sixth hour, and there was a darkness over all the earth until the ninth hour.…

"Then Paul stood in the midst of Mars' hill, and said, Ye men of Athens, I perceive that in all things ye are too superstitious." Acts 17:22

Paul Preaching on Mars' Hill

"Then Paul stood in the midst of Mars' hill, and said, Ye men of Athens, I perceive that in all things…

Diagram used to prove the theorem: "Every section of a sphere by a lane is a circle."

Sphere Cut By Plane

Diagram used to prove the theorem: "Every section of a sphere by a lane is a circle."

"QUARTERED PER CROSS—The shield is divided into four parts, called quarters, by an horizontal and perpendicular line, crossing each other in the centre of the field, each of which is numbered." -Hall, 1862

Quartered Per Cross

"QUARTERED PER CROSS—The shield is divided into four parts, called quarters, by an horizontal…

"Eighth Son, the CROSS MOLINE. The differences used by armorists at the present time are nine in number. They not only distinguish the sons of one family, but also denote the subordinate degrees in each house." -Hall, 1862

Cross Moline

"Eighth Son, the CROSS MOLINE. The differences used by armorists at the present time are nine in number.…

"And it came to pass, when the people removed from their tents, to pass over the Jordan, the priests that bare the ark of the covenant being before the people; and when they that bare the ark were come unto the Jordan, and the feet of the priests that bare the ark were dipped in the brink of the water (for the Jordan overfloweth all its banks all the time of harvest,) that the waters which came down from above stood, and rose up in one heap, a great way off, at Adam, the city that is beside Zarethan; and those that went down toward the sea of the Arabah, even the Salt Sea, were wholly cut off: and the people passed over right against Jericho. And the priests that bare the ark of the covenant of Jehovah stood firm on dry ground in the midst of the Jordan; and all Israel passed over on dry ground, until all the nation were passed clean over the Jordan. Joshua 3:14-17 <p>Illustration of the priests carrying the ark of the covenant into the Jordan River. Many people follow them into the dry river bed.

The Hebrews Crossing the Jordan

"And it came to pass, when the people removed from their tents, to pass over the Jordan, the priests…

Or, a cross, gules. THE CROSS ... as its name imports, was the distinguishing badge of the Crusaders, in its simplest form. It was merely two pieces of list or riband of the same length, crossing each other at right angles. The colour of the riband or list denoted the nation to which the Crusader belonged. The cross is an honourable ordinary, occupying one fifth of the shield when not charged, but if charged, one third. -Hall, 1862

Couple-Close

Or, a cross, gules. THE CROSS ... as its name imports, was the distinguishing badge of the Crusaders,…

Gules, a saltier, argent. The saltier was formed by making two pieces of riband cross diagonally, having the appearance of the letter X, or, speaking heraldically, the bend and bend sinister crossing each other in the centre of the shield. The saltier, if uncharged, occupies one-fifth of the field; if charged, one-third. -Hall, 1862

Cross Ordinary

Gules, a saltier, argent. The saltier was formed by making two pieces of riband cross diagonally, having…

The Battle of Malvern Hill, also known as the Battle of Poindexter's Farm took place on July 1, 1862, in Henrico County, Virginia was the sixth and last of the Seven Days Battles of the Civil War.

Battle of Malvern Hill

The Battle of Malvern Hill, also known as the Battle of Poindexter's Farm took place on July 1, 1862,…

The Marye House is located near Fredericksburg where skirmishes advanced towards during the Battle of Fredericksburg.

Marye House

The Marye House is located near Fredericksburg where skirmishes advanced towards during the Battle of…

An illustration of cross headstones in graveyard.

Cross Headstones in Graveyard

An illustration of cross headstones in graveyard.

"Five roundlets; one, three, one, or in cross. When there are many figures of the same species borne in coats of arms, their number must be observed as they stand, and properly expressed." -Hall, 1862

Five Roundlets

"Five roundlets; one, three, one, or in cross. When there are many figures of the same species borne…

"Baron and femme, two atchievements. First, azure, a pile or, crest a star of six points, argent; second, gules, a cross flory argent, surmounted by an earl's coronet: supporters, on the dexter side a stag ducally gorged and chained, on the sinister side a griffin gorged and chained; motto, Honour and Truth. If a peeress in her own right, or the daughter of a peer, marries a private gentleman, their coats of arms are not conjoined paleways, as baron and femme, but are placed upon separate shields by the side of each other; they are usually inclosed in a mantel." -Hall, 1862

Baron and Femme

"Baron and femme, two atchievements. First, azure, a pile or, crest a star of six points, argent; second,…

"Or, a cross gules, over all a baton argent. BATON. BATUNE. BASTON. It is generally used as an abatement in coats of arms to denote illegitimacy." -Hall, 1862

Baton Abatement

"Or, a cross gules, over all a baton argent. BATON. BATUNE. BASTON. It is generally used as an abatement…

"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 Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal curvature, and/or other physical features require special precautions on the part of road users.

Hill, Black and White

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal…

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal curvature, and/or other physical features require special precautions on the part of road users.

Hill, Color

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal…

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal curvature, and/or other physical features require special precautions on the part of road users.

Hill, Outline

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal…

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal curvature, and/or other physical features require special precautions on the part of road users.

Hill, Silhouette

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal…

A Cross Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection and the possibility of turning or entering traffic. The relative importance of the intersecting roadways may be shown by different widths of lines in the symbol. An advance street name plaque may be installed above or below an Intersection Warning sign.

Cross Road, Black and White

A Cross Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection…

A Cross Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection and the possibility of turning or entering traffic. The relative importance of the intersecting roadways may be shown by different widths of lines in the symbol. An advance street name plaque may be installed above or below an Intersection Warning sign.

Cross Road, Color

A Cross Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection…

A Cross Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection and the possibility of turning or entering traffic. The relative importance of the intersecting roadways may be shown by different widths of lines in the symbol. An advance street name plaque may be installed above or below an Intersection Warning sign.

Cross Road, Outline

A Cross Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection…

A Cross Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection and the possibility of turning or entering traffic. The relative importance of the intersecting roadways may be shown by different widths of lines in the symbol. An advance street name plaque may be installed above or below an Intersection Warning sign.

Cross Road, Silhouette

A Cross Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Pedestrian Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Pedestrian Crossing, Color

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Pedestrian Crossing, Outline

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Pedestrian Crossing, Silhouette

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the edge of the parallel roadway, is less than 30 m (100 ft), this sign shall be installed on each approach of the parallel highway to warn road users making a turn that they will encounter a highway-rail grade crossing soon after making a turn, and a <a href="../../68200/68226/68226_488_W10-1_b.htm">Highway-Rail Grade Crossing Advance Warning</a> sign for the approach to the tracks shall not be required to be between the tracks and the parallel highway.

Highway-Rail Grade Crossing Advance Warning Cross Intersection, Black and White

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the…

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the edge of the parallel roadway, is less than 30 m (100 ft), this sign shall be installed on each approach of the parallel highway to warn road users making a turn that they will encounter a highway-rail grade crossing soon after making a turn, and a <a href="../../68200/68226/68226_488_W10-1_b.htm">Highway-Rail Grade Crossing Advance Warning</a> sign for the approach to the tracks shall not be required to be between the tracks and the parallel highway.

Highway-Rail Grade Crossing Advance Warning Cross Intersection, Color

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the…

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the edge of the parallel roadway, is less than 30 m (100 ft), this sign shall be installed on each approach of the parallel highway to warn road users making a turn that they will encounter a highway-rail grade crossing soon after making a turn, and a <a href="../../68200/68226/68226_488_W10-1_b.htm">Highway-Rail Grade Crossing Advance Warning</a> sign for the approach to the tracks shall not be required to be between the tracks and the parallel highway.

Highway-Rail Grade Crossing Advance Warning Cross Intersection, Outline

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the…

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the edge of the parallel roadway, is less than 30 m (100 ft), this sign shall be installed on each approach of the parallel highway to warn road users making a turn that they will encounter a highway-rail grade crossing soon after making a turn, and a <a href="../../68200/68226/68226_488_W10-1_b.htm">Highway-Rail Grade Crossing Advance Warning</a> sign for the approach to the tracks shall not be required to be between the tracks and the parallel highway.

Highway-Rail Grade Crossing Advance Warning Cross Intersection, Silhouette

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the…

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the edge of the parallel roadway, is less than 30 m (100 ft), this sign shall be installed on each approach of the parallel highway to warn road users making a turn that they will encounter a highway-rail grade crossing soon after making a turn, and a <a href="../../68200/68226/68226_488_W10-1_b.htm">Highway-Rail Grade Crossing Advance Warning</a> sign for the approach to the tracks shall not be required to be between the tracks and the parallel highway.

Highway-Rail Grade Crossing Advance Warning T-Intersection, Black and White

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the…

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the edge of the parallel roadway, is less than 30 m (100 ft), this sign shall be installed on each approach of the parallel highway to warn road users making a turn that they will encounter a highway-rail grade crossing soon after making a turn, and a <a href="../../68200/68226/68226_488_W10-1_b.htm">Highway-Rail Grade Crossing Advance Warning</a> sign for the approach to the tracks shall not be required to be between the tracks and the parallel highway.

Highway-Rail Grade Crossing Advance Warning T-Intersection, Color

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the…

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the edge of the parallel roadway, is less than 30 m (100 ft), this sign shall be installed on each approach of the parallel highway to warn road users making a turn that they will encounter a highway-rail grade crossing soon after making a turn, and a <a href="../../68200/68226/68226_488_W10-1_b.htm">Highway-Rail Grade Crossing Advance Warning</a> sign for the approach to the tracks shall not be required to be between the tracks and the parallel highway.

Highway-Rail Grade Crossing Advance Warning T-Intersection, Outline

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the…