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Relationship to the sign function. The absolute value function of a real number returns its value irrespective of its sign, whereas the sign (or signum) function returns a number's sign irrespective of its value. The following equations show the relationship between these two functions: or and for , Relationship to the...
The second derivative of  with respect to  is zero everywhere except zero, where it does not exist. As a generalised function, the second derivative may be taken as two times the Dirac delta function. Antiderivative. The antiderivative (indefinite integral) of the real absolute value function is where is an arbitrary c...
The standard Euclidean distance between two points and in Euclidean -space is defined as: This can be seen as a generalisation, since for formula_52 and formula_53 real, i.e. in a 1-space, according to the alternative definition of the absolute value, and for formula_55 and formula_56 complex numbers, i.e. in a 2-space...
where is the additive inverse of , 0 is the additive identity, and < and ≥ have the usual meaning with respect to the ordering in the ring. Fields. The four fundamental properties of the absolute value for real numbers can be used to generalise the notion of absolute value to an arbitrary field, as follows. A real-v...
A real-valued function on a vector space  over a field , represented as , is called an absolute value, but more usually a norm, if it satisfies the following axioms: For all  in , and , in , The norm of a vector is also called its "length" or "magnitude". In the case of Euclidean space formula_66, the function defined ...
The real numbers formula_68, complex numbers formula_74, and quaternions formula_75 are all composition algebras with norms given by definite quadratic forms. The absolute value in these division algebras is given by the square root of the composition algebra norm. In general the norm of a composition algebra may be a ...
Analog signal An analog signal (American English) or analogue signal (British and Commonwealth English) is any continuous-time signal representing some other quantity, i.e., "analogous" to another quantity. For example, in an analog audio signal, the instantaneous signal voltage varies continuously with the pressure of...
Any information may be conveyed by an analog signal; such a signal may be a measured response to changes in a physical variable, such as sound, light, temperature, position, or pressure. The physical variable is converted to an analog signal by a transducer. For example, sound striking the diaphragm of a microphone ind...
Converting an analog signal to digital form introduces a low-level quantization noise into the signal due to finite resolution of digital systems. Once in digital form, the signal can be transmitted, stored, and processed without introducing additional noise or distortion using error detection and correction. Noise acc...
Arecales Arecales is an order of flowering plants. The order has been widely named as such only for the past few decades; until then, the accepted name for the order including these plants was Principes. The order includes palms and relatives. Taxonomy. The APG IV system of 2016 places Dasypogonaceae in this order, af...
Principes. In plant taxonomy, Principes is a botanical name, meaning "the first". It was used in the Engler system for an order in the "Monocotyledones" and later in the Kubitzki system. This order included one family only, the "Palmae" (alternate name "Arecaceae"). As the rules for botanical nomenclature provide for t...
Hercule Poirot Hercule Poirot (, ) is a fictional Belgian detective created by British writer Agatha Christie. Poirot is Christie's most famous and longest-running character, appearing in 33 novels, two plays ("Black Coffee" and "Alibi"), and 51 short stories published between 1920 and 1975. Poirot has been portrayed o...
A more obvious influence on the early Poirot stories is that of Arthur Conan Doyle. In "An Autobiography", Christie states, "I was still writing in the Sherlock Holmes tradition – eccentric detective, stooge assistant, with a Lestrade-type Scotland Yard detective, Inspector Japp". Conan Doyle acknowledged basing his de...
Popularity. Poirot first appeared in "The Mysterious Affair at Styles", published in 1920, and exited in "Curtain", published in 1975. Following the latter, Poirot was the only fictional character to receive an obituary on the front page of "The New York Times". By 1930, Agatha Christie found Poirot "insufferable"; by ...
Frequent mention is made of his patent leather shoes, damage to which is frequently a source of misery for him, but comical for the reader. Poirot's appearance, regarded as fastidious during his early career, later falls hopelessly out of fashion. Among Poirot's most significant personal attributes is the sensitivity o...
Methods. In "The Mysterious Affair at Styles", Poirot operates as a fairly conventional, clue-based and logical detective; reflected in his vocabulary by two common phrases: his use of "the little grey cells" and "order and method". Hastings is irritated by the fact that Poirot sometimes conceals important details of h...
Poirot focuses on getting people to talk. In the early novels, he casts himself in the role of "Papa Poirot", a benign confessor, especially to young women. In later works, Christie made a point of having Poirot supply false or misleading information about himself or his background to assist him in obtaining informatio...
It is true that I can speak the exact, the idiomatic English. But, my friend, to speak the broken English is an enormous asset. It leads people to despise you. They say – a foreigner – he can't even speak English properly. ... Also I boast! An Englishman he says often, "A fellow who thinks as much of himself as that ca...
A brief passage in "The Big Four" provides original information about Poirot's birth or at least childhood in or near the town of Spa, Belgium: "But we did not go into Spa itself. We left the main road and wound into the leafy fastnesses of the hills, till we reached a little hamlet and an isolated white villa high on ...
Policeman. Gustave ... was not a policeman. I have dealt with policemen all my life and I "know". He could pass as a detective to an outsider but not to a man who was a policeman himself. Hercule Poirot was active in the Brussels police force by 1893. Very little mention is made about this part of his life, but in "The...
Nevertheless, he regards the 1893 case in "The Chocolate Box", as his only failure through his fault only. Again, Poirot is not reliable as a narrator of his personal history and there is no evidence that Christie sketched it out in any depth. During his police career, Poirot shot a man who was firing from a roof into ...
In "The Double Clue", Poirot mentions that he was Chief of Police of Brussels, until "the Great War" (World War I) forced him to leave for England. Private detective. I had called in at my friend Poirot's rooms to find him sadly overworked. So much had he become the rage that every rich woman who had mislaid a bracelet...
After the war, Poirot became a private detective and began undertaking civilian cases. He moved into what became both his home and work address, Flat 203 at 56B Whitehaven Mansions. Hastings first visits the flat when he returns to England in June 1935 from Argentina in "The A.B.C. Murders", Chapter 1. The ITV series "...
It is this villainous sea that troubles me! The "mal de mer" – it is horrible suffering! It was during this time he met the Countess Vera Rossakoff, a glamorous jewel thief. The history of the countess is, like Poirot's, steeped in mystery. She claims to have been a member of the Russian aristocracy before the Russian ...
In "The Augean Stables", he helped the government to cover up vast corruption. In "Murder on the Orient Express", Poirot allowed the murderers to go free after discovering that twelve different people participated in the murder, each one stabbing the victim in a darkened carriage, after drugging him into unconsciousnes...
While Poirot was usually paid handsomely by clients, he was also known to take on cases that piqued his curiosity, although they did not pay well. Poirot shows a love of steam trains, which Christie contrasts with Hastings' love of autos: this is shown in "The Plymouth Express", "The Mystery of the Blue Train", "Murder...
There is specific mention in "The Capture of Cerberus" of the twenty-year gap between Poirot's previous meeting with Countess Rossakoff and this one. If the "Labours" precede the events in "Roger Ackroyd", then the Ackroyd case must have taken place around twenty years "later" than it was published, and so must any of ...
He continues to employ his secretary, Miss Lemon, at the time of the cases retold in "Hickory Dickory Dock" and "Dead Man's Folly", which take place in the mid-1950s. It is, therefore, better to assume that Christie provided no authoritative chronology for Poirot's retirement but assumed that he could either be an acti...
Towards the end of his career, it becomes clear that Poirot's retirement is no longer a convenient fiction. He assumes a genuinely inactive lifestyle during which he concerns himself with studying famous unsolved cases of the past and reading detective novels. He even writes a book about mystery fiction in which he dea...
Notably, during this time his physical characteristics also change dramatically; by the time Arthur Hastings meets Poirot again in "Curtain", he looks very different from his previous appearances, having become thin with age and with obviously dyed hair. Death. On the ITV television series, Poirot died in October 1949 ...
It is revealed at the end of "Curtain" that he fakes his need for a wheelchair to fool people into believing that he is suffering from arthritis, to give the impression that he is more infirm than he is. His last recorded words are "Cher ami!", spoken to Hastings as the Captain left his room. The TV adaptation adds tha...
Hastings, a former British Army officer, meets Poirot during Poirot's years as a police officer in Belgium and almost immediately after they both arrive in England. He becomes Poirot's lifelong friend and appears in many cases. Poirot regards Hastings as a poor private detective, not particularly intelligent, yet helpf...
The two collaborate for the final time in "Curtain" when the seemingly-crippled Poirot asks Hastings to assist him in his final case. When the killer they are tracking nearly manipulates Hastings into committing murder, Poirot describes this in his final farewell letter to Hastings as the catalyst that prompted him to ...
She has authored more than 56 novels and greatly dislikes people modifying her characters. She is the only one in Poirot's universe to have noted that "It's not natural for five or six people to be on the spot when B is murdered and all have a motive for killing B." She first met Poirot in the story "Cards on the Table...
Chief Inspector James Harold Japp. Japp is a Scotland Yard Inspector and appears in many of the stories trying to solve cases that Poirot is working on. Japp is outgoing, loud, and sometimes inconsiderate by nature, and his relationship with the refined Belgian is one of the stranger aspects of Poirot's world. He first...
Hercule Poirot became famous in 1926 with the publication of "The Murder of Roger Ackroyd", whose surprising solution proved controversial. The novel is still among the most famous of all detective novels: Edmund Wilson alludes to it in the title of his well-known attack on detective fiction, "Who Cares Who Killed Roge...
Portrayals. Stage. The first actor to portray Poirot was Charles Laughton. He appeared on the West End in 1928 in the play "Alibi" which had been adapted by Michael Morton from the novel "The Murder of Roger Ackroyd". In 1932, the play was performed as "The Fatal Alibi" on Broadway. Another Poirot play, "Black Coffee" ...
Film. Austin Trevor. Austin Trevor debuted the role of Poirot on screen in the 1931 British film "Alibi". The film was based on the stage play. Trevor reprised the role of Poirot twice, in "Black Coffee" and "Lord Edgware Dies". Trevor said once that he was probably cast as Poirot simply because he could do a French ac...
Peter Ustinov. Peter Ustinov played Poirot six times, starting with "Death on the Nile" (1978). He reprised the role in "Evil Under the Sun" (1982) and "Appointment with Death" (1988). Christie's daughter Rosalind Hicks observed Ustinov during a rehearsal and said, "That's not Poirot! He isn't at all like that!" Ustino...
Television. David Suchet. David Suchet starred as Poirot in the ITV series "Agatha Christie's Poirot" from 1989 until June 2013, when he announced that he was bidding farewell to the role. "No one could've guessed then that the series would span a quarter-century or that the classically trained Suchet would complete th...
Audio. BBC Radio. An adaptation of "Murder in the Mews" was broadcast on the BBC Light Programme in March 1955 starring Richard Bebb as Poirot; this program was thought lost, but was discovered in the BBC archives in 2015. From 1985 to 2007, Radio 4 produced a series of twenty-seven adaptations of Poirot novels and sho...
Audible is scheduled to release a dramatisation of "The Mysterious Affair at Styles" in November 2024. The cast includes Peter Dinklage as Poirot. Others. In 1939, Orson Welles and the Mercury Players dramatised "Roger Ackroyd" on CBS's "Campbell Playhouse". On 6 October 1942, the Mutual radio series "Murder Clinic" br...
Video games. In the video games "Agatha Christie - Hercule Poirot: The First Cases" and "Agatha Christie - Hercule Poirot: The London Case", Poirot is voiced by Will De Renzy-Martin. Parodies and references. Parodies of Hercule Poirot have appeared in a number of movies, including "Revenge of the Pink Panther", where P...
In season 2, episode 4 of TVFPlay's Indian web series "Permanent Roommates", one of the characters refers to Hercule Poirot as her inspiration while she attempts to solve the mystery of the cheating spouse. Throughout the episode, she is mocked as Hercule Poirot and Agatha Christie by the suspects. TVFPlay also telecas...
Miss Marple Miss Jane Marple is a fictional character in Agatha Christie's crime novels and short stories. Miss Marple lives in the village of St Mary Mead and acts as an amateur consulting detective. Often characterised as an elderly spinster, she is one of Christie's best-known characters and has been portrayed numer...
It is popularly believed that Christie may have taken her iconic character's name from Marple railway station, through which she passed, while a letter – ostensibly from Christie to a fan – appeared to prove that the name was inspired by a visit to a sale at Marple Hall in the same town, near her sister Margaret Watts'...
Miss Marple never married and has no close living relatives. Her nephew, the "well-known author" Raymond West, appears in some stories, including "The Thirteen Problems", "Sleeping Murder", and "Ingots of Gold" (which also feature his wife, Joyce Lemprière). Raymond overestimates himself and underestimates his aunt's m...
While Miss Marple is described as "an old lady" in many of the stories, her age is rarely mentioned and is not consistently presented. In "At Bertram's Hotel", published in 1965, it is said she visited the hotel when she was 14 and almost 60 years have passed since then, implying that she is nearly 75 years old; but in...
Bibliography. Agatha Christie wrote 12 novels and 20 short stories featuring Miss Marple. Miss Marple short story collections. Miss Marple also appears in "Greenshaw's Folly", a short story included as part of the Poirot collection "The Adventure of the Christmas Pudding" (1960). Four stories in the "Three Blind Mice" ...
On 21 September 1977, while "Murder at the Vicarage" was still running at the Fortune, a stage adaptation by Leslie Darbon of "A Murder Is Announced" opened at the Vaudeville Theatre, with Dulcie Gray as Miss Marple. The show ran to the end of September 1978 and then toured. Films. Margaret Rutherford. Margaret Rutherf...
"Murder, She Said" (1961) was the first of the four British MGM productions starring Rutherford. This film was based on the 1957 novel "4:50 from Paddington" (U.S. title, "What Mrs. McGillicuddy Saw!"), and the changes made in the plot were typical of the series. In the film, Mrs. McGillicuddy is cut from the plot. Mis...
The music to all four films was composed and conducted by Ron Goodwin. The same theme is used on all four films with slight variations in each. The score was written within a couple of weeks by Goodwin who was approached by Pollock after Pollock had heard about him from Stanley Black. Black had worked with Pollock on "...
Ita Ever. In 1983, Estonian stage and film actress, Ita Ever, starred in the Russian language Mosfilm adaptation of Agatha Christie's novel, "A Pocket Full of Rye" (using the Russian edition's translated title, "The Secret of the Blackbirds"), as the character of Miss Marple. Ever has also portrayed the character of Mi...
Helen Hayes. American stage and screen actress, Helen Hayes, portrayed Miss Marple in two American television films near the end of her decades-long acting career, both for CBS: "A Caribbean Mystery" (1983) and "Murder with Mirrors" (1985). Sue Grafton contributed to the screenplay of the former. Hayes's Marple was ben...
Listing of the TV series featuring Joan Hickson: Geraldine McEwan (2004–2008)/Julia McKenzie (2009–2013). Beginning in 2004, ITV broadcast a series of adaptations of Agatha Christie's books under the title "Agatha Christie's Marple", usually referred to as "Marple." Geraldine McEwan starred in the first three series. J...
In 2015, CBS planned a "much younger" version of the character, a granddaughter who takes over a California bookstore. In 2018, Miss Marple was portrayed by Yunjin Kim in the South Korean television series "Ms. Ma, Nemesis". Anime. From 2004 to 2005, Japanese TV network NHK produced a 39 episode anime series titled "Ag...
April April is the fourth month of the year in the Gregorian and Julian calendars. Its length is 30 days. April is commonly associated with the season of spring in the Northern Hemisphere, and autumn in the Southern Hemisphere, where it is the seasonal equivalent to October in the Northern Hemisphere and vice versa. Hi...
April was the second month of the earliest Roman calendar, before "Ianuarius" and "Februarius" were added by King Numa Pompilius about 700 BC. It became the fourth month of the calendar year (the year when twelve months are displayed in order) during the time of the decemvirs about 450 BC, when it was 29 days long. The...
In Slovene, the most established traditional name is "mali traven", the month when plants start growing. It was first written in 1466 in the Škofja Loka manuscript. The month April originally had 30 days; Numa Pompilius made it 29 days long; finally, Julius Caesar's calendar reform made it 30 days long again, which was...
The "Days of April" ("journées d'avril") is a name assigned in French history to a series of insurrections at Lyons, Paris and elsewhere, against the government of Louis Philippe in 1834, which led to violent repressive measures, and to a famous trial known as the "procès d'avril". Symbols. April's birthstone is the di...
August August is the eighth month of the year in the Julian and Gregorian calendars. Its length is 31 days. In the Southern Hemisphere, August is the seasonal equivalent of February in the Northern Hemisphere. In the Northern Hemisphere, August falls in summer. In the Southern Hemisphere, the month falls during winter....
The month was originally named "Sextilis" in Latin because it was the 6th month in the original ten-month Roman calendar under Romulus in 753 BC, with March being the first month of the year. About 700 BC, it became the eighth month when January and February were added to the year before March by King Numa Pompilius, w...
Aaron According to the Old Testament of the Bible, Aaron ( or ) was a Israelite prophet, a high priest, and the elder brother of Moses. Information about Aaron comes exclusively from religious texts, such as the Hebrew Bible, the New Testament (Luke, Acts, and Hebrews), and the Quran. The Hebrew Bible relates that, unl...
Biblical narrative. According to the Book of Exodus, Aaron first functioned as Moses' assistant. Because Moses complained that he could not speak well, God appointed Aaron as Moses' "prophet" (Exodus 4:10–17; 7:1). At the command of Moses, he let his rod turn into a snake. Then he stretched out his rod in order to brin...
In later books of the Hebrew Bible, Aaron and his kin are not mentioned very often except in literature dating to the Babylonian captivity and later. The books of Judges, Samuel and Kings mention priests and Levites, but do not mention the Aaronides in particular. The Book of Ezekiel, which devotes much attention to pr...
On the day of Aaron's consecration, his oldest sons, Nadab and Abihu, were burned up by divine fire because they offered "strange" incense. Most interpreters think this story reflects a conflict between priestly families some time in Israel's past. Others argue that the story simply shows what can happen if the priests...
To emphasize the validity of the Levites' claim to the offerings and tithes of the Israelites, Moses collected a rod from the leaders of each tribe in Israel and laid the twelve rods overnight in the tent of meeting. The next morning, Aaron's rod was found to have budded and blossomed and produced ripe almonds. The rod...
Descendants. Aaron married Elisheba, daughter of Amminadab and sister of Nahshon of the tribe of Judah. The sons of Aaron were Nadab, Abihu, Eleazar and Ithamar; only the latter two had progeny. A descendant of Aaron is an Aaronite, or Kohen, meaning Priest. Any non-Aaronic Levite—i.e., descended from Levi but not from...
In religious traditions. Jewish rabbinic literature. The older prophets and prophetical writers beheld in their priests the representatives of a religious form inferior to the prophetic truth; men without the spirit of God and lacking the willpower requisite to resist the multitude in its idolatrous proclivities. Thus ...
In fulfillment of the promise of peaceful life, symbolized by the pouring of oil upon his head, Aaron's death, as described in the aggadah, was of a wonderful tranquility. Accompanied by Moses, his brother, and by Eleazar, his son, Aaron went to the summit of Mount Hor, where the rock suddenly opened before him and a b...
The rabbis particularly praise the brotherly sentiment between Aaron and Moses. When Moses was appointed ruler and Aaron high priest, neither betrayed any jealousy; instead they rejoiced in each other's greatness. When Moses at first declined to go to Pharaoh, saying: "O my Lord, send, I pray, by the hand of him whom y...
When Moses poured the oil of anointment upon the head of Aaron, Aaron modestly shrank back and said: "Who knows whether I have not cast some blemish upon this sacred oil so as to forfeit this high office." Then the Shekhinah spoke the words: "Behold the precious ointment upon the head, that ran down upon the beard of A...
Christianity. In the Eastern Orthodox and Maronite churches, Aaron is venerated as a saint whose feast day is shared with his brother Moses and celebrated on September 4. (Those churches that follow the traditional Julian calendar celebrate this day on September 17 of the modern Gregorian calendar). Aaron is also comme...
Mormonism. In the Church of Jesus Christ of Latter-day Saints, the Aaronic priesthood is the lesser order of priesthood under the higher order of the Melchizedek priesthood. Those ordained to this priesthood have the authority to act in God's name in certain responsibilities in the church such as the administration of ...
Aaron's significance in Islam, however, is not limited to his role as the helper of Moses. Islamic tradition also accords Aaron the role of a patriarch, as tradition records that the priestly descent came through Aaron's lineage, which included the entire House of Amran. Baháʼí Faith. In the Baháʼí Faith, although his ...
Alcohol (chemistry) In chemistry, an alcohol (), is a type of organic compound that carries at least one hydroxyl () functional group bound to a saturated carbon atom. Alcohols range from the simple, like methanol and ethanol, to complex, like sugar alcohols and cholesterol. The presence of an OH group strongly modifie...
The works of Taddeo Alderotti (1223–1296) describe a method for concentrating alcohol involving repeated fractional distillation through a water-cooled still, by which an alcohol purity of 90% could be obtained. The medicinal properties of ethanol were studied by Arnald of Villanova (1240–1311 CE) and John of Rupesciss...
Paracelsus and Libavius both used the term "alcohol" to denote a fine powder, the latter speaking of an "alcohol" derived from antimony. At the same time Paracelsus uses the word for a volatile liquid; "alcool" or "alcool vini" occurs often in his writings. Bartholomew Traheron, in his 1543 translation of John of Vigo,...
The term "ethanol" was invented in 1892, blending "ethane" with the "-ol" ending of "alcohol", which was generalized as a libfix. The term "alcohol" originally referred to the primary alcohol ethanol (ethyl alcohol), which is used as a drug and is the main alcohol present in alcoholic drinks. The suffix "-ol" appears i...
In cases where the hydroxy group is bonded to an sp2 carbon on an aromatic ring, the molecule is classified separately as a phenol and is named using the IUPAC rules for naming phenols. Phenols have distinct properties and are not classified as alcohols. Common names. In other less formal contexts, an alcohol is often ...
Applications. Alcohols have a long history of myriad uses. For simple mono-alcohols, which is the focus on this article, the following are most important industrial alcohols: Methanol is the most common industrial alcohol, with about 12 million tons/y produced in 1980. The combined capacity of the other alcohols is abo...
Because of hydrogen bonding, alcohols tend to have higher boiling points than comparable hydrocarbons and ethers. The boiling point of the alcohol ethanol is 78.29 °C, compared to 69 °C for the hydrocarbon hexane, and 34.6 °C for diethyl ether. Occurrence in nature. Alcohols occur widely in nature, as derivatives of gl...
Many industrial alcohols, such as cyclohexanol for the production of nylon, are produced by hydroxylation. Ziegler and oxo processes. In the Ziegler process, linear alcohols are produced from ethylene and triethylaluminium followed by oxidation and hydrolysis. An idealized synthesis of 1-octanol is shown: The process ...
Hydration is also used industrially to produce the diol ethylene glycol from ethylene oxide. Fermentation. Ethanol is obtained by fermentation of glucose (which is often obtained from starch) in the presence of yeast. Carbon dioxide is cogenerated. Like ethanol, butanol can be produced by fermentation processes. "Sacch...
Hydrolysis. Alkenes engage in an acid catalyzed hydration reaction using concentrated sulfuric acid as a catalyst that gives usually secondary or tertiary alcohols. Formation of a secondary alcohol via alkene reduction and hydration is shown: The hydroboration-oxidation and oxymercuration-reduction of alkenes are more ...
Nucleophilic substitution. Tertiary alcohols react with hydrochloric acid to produce tertiary alkyl chloride. Primary and secondary alcohols are converted to the corresponding chlorides using thionyl chloride and various phosphorus chloride reagents. Primary and secondary alcohols, likewise, convert to alkyl bromides u...
This is a diagram of acid catalyzed dehydration of ethanol to produce ethylene: A more controlled elimination reaction requires the formation of the xanthate ester. Protonolysis. Tertiary alcohols react with strong acids to generate carbocations. The reaction is related to their dehydration, e.g. isobutylene from "tert...
The direct oxidation of primary alcohols to carboxylic acids normally proceeds via the corresponding aldehyde, which is transformed via an "aldehyde hydrate" () by reaction with water before it can be further oxidized to the carboxylic acid. Reagents useful for the transformation of primary alcohols to aldehydes are no...
Achill Island Achill Island (; ) is an island off the west coast of Ireland in the historical barony of Burrishoole, County Mayo. It is the largest of the Irish isles and has an area of approximately . Achill had a population of 2,345 in the 2022 census. The island, which has been connected to the mainland by a bridge ...
Overlords. Achill Island lies in the historical barony of Burrishoole, in the territory of ancient Umhall (Umhall Uactarach and Umhall Ioctarach), that originally encompassed an area extending from the County Galway/Mayo border to Achill Head. The hereditary chieftains of Umhall were the O'Malleys, recorded in the area...
Achill was connected to the mainland by Michael Davitt Bridge, a bridge connecting Achill Sound and Polranny, in 1887. Specific historical sites and events. Grace O'Malley's Castle. Carrickkildavnet Castle is a 15th-century tower house associated with the O'Malley Clan, who were once a ruling family of Achill. Grace O'...
For almost forty years, Nangle edited a newspaper called the "Achill Missionary Herald and Western Witness", which was printed in Achill. He expanded his mission into Mweelin, Kilgeever, West Achill where a school, church, rectory, cottages and a training school were built. Edward's wife, Eliza, suffered poor health in...
Railway. In 1894, the Westport – Newport railway line was extended to Achill Sound. The railway station is now a hostel. The train provided a great service to Achill, but it also is said to have fulfilled an ancient prophecy. Brian Rua O' Cearbhain had prophesied that 'carts on iron wheels' would carry bodies into Achi...
Kildamhnait. Kildamhnait on the south-east coast of Achill is named after St. Damhnait, or Dymphna, who founded a church there in the 7th century. There is also a holy well just outside the graveyard. The present church was built in the 1700s and the graveyard contains memorials to the victims of two of Achill's greate...
Carney also wrote accounts of his lengthy fundraising trips across the U.S. at the start of the 20th century. The ruins of this monastery are still to be seen in Bunnacurry today. Valley House. The historic Valley House is located in Tonatanvally, "The Valley", near Dugort, in the northeast of Achill Island. The presen...
Deserted Village. Close to Dugort, at the base of Slievemore mountain lies the Deserted Village. There are approximately 80 ruined houses in the village. The houses were built of unmortared stone. Each house consisted of just one room. In the area surrounding the Deserted Village, including on the mountain slopes, ther...
While abandoned, the families that moved to Dooagh (and their descendants) continued to use the village as a 'booley village'. This means that during the summer season, the younger members of the family, teenage boys and girls, would take the livestock to the area and tend flocks or herds on the hillside and stay in th...
From 2004 to 2006, the Achill Island Maritime Archaeology Project directed by Chuck Meide was sponsored by the College of William and Mary, the Institute of Maritime History, the Achill Folklife Centre (now the Achill Archaeology Centre), and the Lighthouse Archaeological Maritime Program (LAMP). This project focused o...
The mountain of Slievemore, (672 m) rises dramatically in the north of the island. On its slops is an abandoned village, the "Deserted Village". West of this ruined village is an old Martello tower, again built by the British to warn of any possible French invasion during the Napoleonic Wars. The area also has an appro...
During the 1960s and 1970s, there was growth in tourism. The largest employers on Achill include its two hotels. The island has several bars, cafes and restaurants. The island's Atlantic location means that seafood, including lobster, mussels, salmon, trout and winkles, are common. Lamb and beef are also popular. Relig...