Now, although the roots of the mystery story in serious literature go back as far as Balzac, Dickens, and Poe, it was not until the closing decades of the 19th century that the private detective became an established figure in popular fiction.

This Europeanization of the law was made explicit by a number of 19th century scholars.

The Civil War was a significant force in the eventual dominance of the singular usage by the end of the 19th century.

In the zoological sciences, some of his observations were confirmed to be accurate only in the 19th century.

His works contain the earliest known formal study of logic, which was incorporated in the late 19th century into modern formal logic.

With the Prior Analytics, Aristotle is credited with the earliest study of formal logic, and his conception of it was the dominant form of Western logic until 19th century advances in mathematical logic.

The term was originally coined in the 19th century by the founding sociologist and philosopher of science, Auguste Comte, and has become a major topic for psychologists ( especially evolutionary psychology researchers ), evolutionary biologists, and ethologists.

From its beginnings in the early 19th century through the early 20th century, anthropology in the United States was influenced by the presence of Native American societies.

In Greece, there was since the 19th century a science of the folklore called laographia ( laography ), in the form of " a science of the interior ", although theoretically weak ; but the connotation of the field deeply changed after World War II, when a wave of Anglo-American anthropologists introduced a science " of the outside ".

The Apollo Belvedere is a marble sculpture that was rediscovered in the late 15th century ; for centuries it epitomized the ideals of Classical Antiquity for Europeans, from the Renaissance through the 19th century.

Early 19th century.

In the Middle Bronze Age an apparently " alphabetic " system known as the Proto-Sinaitic script is thought by some to have been developed in the Sinai peninsula during the 19th century BC, by Canaanite workers in the Egyptian turquoise mines.

From the 19th century it once again became more and more popular.

Yombe people | Yombe-sculpture, 19th century

Portugal has been present in Angola for 400 years, occupied the territory in the 19th and early 20th century, and ruled over it for about 50 years.

Distinctions in vocabulary persist, for example, in culinary terms, where communication with Germans is frequently difficult, and administrative and legal language, which is due to Austria's exclusion from the development of a German nation-state in the late 19th century and its manifold particular traditions.

Until the late 19th century, the axiom of choice was often used implicitly, although it had not yet been formally stated.

The Iron is a famous 19th century landmark in central Norrköping

The museum can be found in the 19th century building The Iron in the Motala ström river in central Norrköping.

With the beginning of the slow decline of the Ottoman Empire in the early 19th century, and as a result of the expansionist policies of Czarist Russia in the Caucasus, many Muslim nations and groups in that region, mainly Circassians, Tatars, Azeris, Lezgis, Chechens, and several Turkic groups left their ancestral homelands and settled in Anatolia.

Later in the 19th century, other missionaries adapted Evans ' system to other Canadian aboriginal languages.

Charles Dickens was a prominent English author of the 19th century.

Leo Tolstoy was a prominent Russian author of the 19th century.

The system was first discovered at the end of the 19th century, and first excavated and studied in the 1970s.

The first few amino acids were discovered in the early 19th century.

Benzene, C < sub > 6 </ sub > H < sub > 6 </ sub >, is the simplest aromatic hydrocarbon and was recognized as the first aromatic hydrocarbon, with the nature of its bonding first being recognized by Friedrich August Kekulé von Stradonitz in the 19th century.

Developed in the late 19th century, stockless anchors represented the first significant departure in anchor design in centuries.

Throughout European history, philosophers such as Aristotle and Thomas Aquinas, among others, contemplated the possibility that souls exist in animals, plants, and people ; however, the currently accepted definition of animism was only developed in the 19th century by Sir Edward Tylor, who created it as " one of anthropology's earliest concepts, if not the first ".

The first wave of English-speaking settlers arrived in North America during the 17th century, followed by further migrations in the 18th and 19th centuries.

Records from the early 19th century survive to this day describing the distinct dialect that had surfaced in the colonies since first settlement in 1788, with Peter Miller Cunningham's 1827 book Two Years in New South Wales, describing the distinctive accent and vocabulary of the native born colonists, different from that of their parents and with a strong London influence.

The original song Advance Australia Fair was composed by Peter Dodds McCormick under the pen-name ' Amicus ' ( which means ' friend ' in Latin ), in the late 19th century, and first performed by Andrew Fairfax at a Highland Society function in Sydney on 30 November 1878.

During the first half of the 19th century, some of the songs African-Americans sang also began to appear in use for shipboard tasks, i. e. as shanties.

At the turn of the 19th century, immigrants from Naples and Genoa opened the first pizza bars, though Spanish residents subsequently owned most of the pizza businesses.

In the late 19th century in Switzerland, casein was first used as a wood glue.

By the 19th century orchestral music in Europe had standardized the string section into the following homogeneous instrumental groups: first violins, second violins, violas, cellos, and double basses.

Antoine Thomson d ' Abbadie d ' Arrast ( January 3, 1810 – March 19, 1897 ) was an Irish-French and Basque explorer, geographer, ethnologue, linguist and astronomer notable for his travels in Ethiopia during the first half of the 19th century.

Atomic absorption spectrometry was first used as an analytical technique, and the underlying principles were established in the second half of the 19th century by Robert Wilhelm Bunsen and Gustav Robert Kirchhoff, both professors at the University of Heidelberg, Germany.

From being a mere village in an agricultural district at the beginning of the 19th century, the place grew rapidly in population owing to the abundance of coal and iron ore, and the population of the whole parish, 1, 486 in 1801, increased tenfold during the first half of the 19th century.

The play was controversial when first published, as it is sharply critical of 19th century marriage norms.

Although bluetongue disease was already recognized in South Africa in the early 19th century, a comprehensive description of the disease was not published until the first decade of the 20th century.

The Asiatic cholera was the first of several cholera pandemics to sweep through Asia and Europe during the 19th and 20th centuries.

The world's first computer printer was a 19th century mechanically driven apparatus invented by Charles Babbage for his difference engine.

While David Kessler and Peter Temin consider ancient Rome to be the largest city before 19th century London and the first to have exceeded a population of over 1 million, George Modelski considers medieval Baghdad, with an estimated population of 1. 2 million at its peak, to be the largest city before 19th century London and the first with a population of over one million.