Dürer journeyed with his wife and her maid via the Rhine to Cologne and then to Antwerp, where he was well received and produced numerous drawings in silverpoint, chalk and charcoal.

Spending much of his youth on Bear Island, in Penobscot Bay off the coast of Maine, he had trouble with geometry, being unable to understand the abstraction necessary to imagine that a chalk dot on the blackboard represented a mathematical point, or that an imperfectly drawn line with an arrow on the end was meant to stretch off to infinity.

The Cretaceous as a separate period was first defined by a Belgian geologist Jean d ' Omalius d ' Halloy in 1822, using strata in the Paris Basin and named for the extensive beds of chalk ( calcium carbonate deposited by the shells of marine invertebrates, principally coccoliths ), found in the upper Cretaceous of western Europe.

The name Cretaceous was derived from Latin creta, meaning chalk.

The Cretaceous was named for the extensive chalk deposits of this age in Europe, but in many parts of the world, the Cretaceous system consists for a major part of marine limestone, a rock type that is formed under warm, shallow marine circumstances.

After the end of the First World War, a chalk quarry known as the Swamps was identified as Charlton's new ground, and in the summer of 1919 work began to create the level playing area and remove debris from the site.

Experimenting with different lines until he was satisfied, Eric would then form the steel tubing using his chalk drawings as a guide.

In ancient times graffiti was carved on walls with a sharp object, although sometimes chalk or coal were used.

One product, now largely defunct, was water-cress, based in Hemel Hempstead and Berkhamsted supported by reliable, clean chalk rivers.

Although this offered great opportunities, he recalls in his autobiography that the only equipment provided to him was a blackboard and piece of chalk.

On 7 December 2007, Michelangelo's red chalk sketch for the dome of St Peter's Basilica, his last before his death in 1564, was discovered in the Vatican archives.

These chalk beds were deposited at the bottom of what was once the Western Interior Seaway, a large shallow sea over what now is the midsection of the North American continent.

The first permanent photograph was made in 1822 by a French inventor, Joseph Nicéphore Niépce, building on a discovery by Johann Heinrich Schultz ( 1724 ): that a silver and chalk mixture darkens under exposure to light.

At some period after its arrival in London, the inscriptions on the stone were coloured in white chalk to make them more legible, and the remaining surface was covered with a layer of carnauba wax designed to protect the Rosetta Stone from visitors ' fingers.

He had his guards supplied with link lights and had chalk and cinders strewed around his tent outside Masyaf — which he was besieging — to detect any footsteps by the Assassins.

The chalk dug from the ditch was piled up to form the bank.

During the millennium celebrations in 2000, the Sydney Harbour Bridge was lit up with the word " Eternity ", as a tribute to the legacy of Arthur Stace a Sydney artist who for many years inscribed that word on pavements in chalk in beautiful copperplate writing despite the fact that he was illiterate.

The Triassic was named in 1834 by Friedrich Von Alberti, after the three distinct rock layers ( tri meaning " three ") that are found throughout Germany and northwestern Europe — red beds, capped by chalk, followed by black shales — called the ' Trias.

The term in Latin equates to the English " blank slate " ( or more accurately, " scraped tablet ") ( which refers to writing on a slate sheet in chalk ) but comes from the Roman tabula or wax tablet, used for notes, which was blanked by heating the wax and then smoothing it to give a tabula rasa.

Individual hybrids of rhododendrons have been grafted on to a rootstock on a single rhododendron plant that was found growing in a chalk quarry.

It was obvious from this viewpoint that the proximity of friendly forces to the enemy positions was preventing sufficient suppressive firepower from being used due to danger close distance to both Mako 30 and QRF chalk 1.

The estuary of the Solent River was gradually flooded, and eventually the Isle of Wight became separated from the mainland as the chalk ridge between The Needles on the island and Old Harry Rocks on the mainland was eroded.

* Loose, powdered chalk may be used as a hand drying agent while climbing.

Alternatively, liquid chalk is sometimes used.

* Calcium sulfate ( CaSO < sub > 4 </ sub >· 2H < sub > 2 </ sub > O ) is used as common blackboard chalk, as well as, in its hemihydrate form better known as Plaster of Paris.

Dry media, normally associated with drawing, such as chalk, may be used in pastel paintings.

Pencil, from Old French pincel, a small paintbrush, from Latin a " little tail " ( see penis — pincellus is Latin from the post-classical period ) is an artist's fine brush of camel hair, also used for writing before modern lead or chalk pencils ; the meaning of " graphite writing implement " apparently evolved late in the 16th century.

White chalk may be used as a filler in producing pale and bright hues with greater luminosity.

Disney security does maintain a fleet of security vans equipped with flares, traffic cones, and chalk commonly used by police officers.

In other groups, spray chalk or colored markers are used to mark the location of each person after each set of drill, with a different color and, sometimes, shape for each move.

It may mean a single roofing slate, or a writing slate, traditionally a small piece of slate, often framed in wood, used with chalk as a notepad or noticeboard etc., and especially for recording charges in pubs and inns.

In 18th-and 19th-century schools, slate was extensively used for blackboards and individual writing slates for which slate or chalk pencils were used.

The Champagne region of France is mostly underlain by chalk deposits, which contain artificial caves used for wine storage.

* Blackboard chalk is a substance used for drawing on rough surfaces, as it readily crumbles leaving particles that stick loosely to these surfaces.

* In agriculture chalk is used for raising pH in soils with high acidity.

* In field sports, including grass tennis courts, powdered chalk was used to mark the boundary lines of the playing field or court.

* Tailor's chalk is traditionally a hard chalk used to make temporary markings on cloth, mainly by tailors.

The term marl is widely used in English-language geology, while the terms Mergel and Seekreide ( German for " lake chalk ") are used in European references.

A crayon (,, or ) is a stick of colored wax, charcoal, chalk, or other materials used for writing, coloring, drawing, and other methods of illustration.

Alice came up with the name Crayola by combining the French word for chalk, craie, with the first part of oleaginous, the oily paraffin wax used to make the crayon.

" Gesso ", also known " glue gesso " or " Italian gesso " is a traditional mix of an animal glue binder ( usually rabbit-skin glue ), chalk, and white pigment, used to coat rigid surfaces such as wooden painting panels as an absorbent primer coat substrate for painting.