In 1974, the 15th edition adopted a third goal: to systematise all human knowledge.

In the fourth era ( 1974 – 94 ), the Britannica introduced its 15th edition, which was re-organised into three parts: the Micropædia, the Macropædia, and the Propædia.

Under Mortimer J. Adler ( member of the Board of Editors of Encyclopædia Britannica since its inception in 1949, and its chair from 1974 ; director of editorial planning for the 15th edition of Britannica from 1965 ), the Britannica sought not only to be a good reference work and educational tool but to systematise all human knowledge.

The absence of a separate index and the grouping of articles into parallel encyclopaedias ( the Micro-and Macropædia ) provoked a " firestorm of criticism " of the initial 15th edition.

In response, the 15th edition was completely re-organised and indexed for a re-release in 1985.

This second version of the 15th edition continued to be published and revised until the 2010 print version.

The official title of the 15th edition is the New Encyclopædia Britannica, although it has also been promoted as Britannica 3.

In March 2012, Britannica's president, Jorge Cauz, announced that it would not produce any new print editions of the encyclopaedia, with the 2010 15th edition being the last.

" Consistent with this tradition, the 2007 version of the current 15th edition was " dedicated by permission to the current President of the United States of America, George W. Bush, and Her Majesty, Queen Elizabeth II ," while the 2010 version of the current 15th edition is " dedicated by permission to Barack Obama, President of the United States of America, and Her Majesty Queen Elizabeth II.

Jacobs, an editor at Esquire magazine, read the entire 2002 version of the 15th edition, describing his experiences in the well-received 2004 book, The Know-It-All: One Man's Humble Quest to Become the Smartest Person in the World.

The initial 15th edition ( 1974 – 1985 ) was faulted for having reduced or eliminated coverage of children's literature, military decorations, and the French poet Joachim du Bellay ; editorial mistakes were also alleged, such as inconsistent sorting of Japanese biographies.

Summing up, one critic called the initial 15th edition a " qualified failure ...&# 91 ; that &# 93 ; cares more for juggling its format than for preserving information.

When American physicist Harvey Einbinder detailed its failings in his 1964 book, The Myth of the Britannica, the encyclopaedia was provoked to produce the 15th edition, which required 10 years of work.

15th edition of the Britannica.

The 15th edition, which was published in 2005, includes 7299 codes.

The title Liber Pontificalis goes back to the 12th century, although it only became current in the 15th century, and the canonical title of the work since the edition of Duchesne in the 19th century.

Making pasta ; illustration from the 15th century edition of Tacuinum Sanitatis, a Latin translation of the Arabic work Taqwīm al-sihha by Ibn Butlan.

In the 15th century Ptolemy's Geographia began to be printed with engraved maps ; the earliest printed edition with engraved maps was produced in Bologna in 1477, followed quickly by a Roman edition in 1478 ( Campbell, 1987 ).

Encyclopædia Britannica, 15th edition: volumes of the Propedia ( green ), Micropedia ( red ), Macropedia, and 2-volume Index ( blue )

The Chicago Manual of Style in 1993 ( 14th edition ) advises: " lackboard bold should be confined to the classroom " ( 13. 14 ) whereas in 2003 ( 15th edition ) it states that " pen-faced ( blackboard ) symbols are reserved for familiar systems of numbers " ( 14. 12 ).

Others suggest the alphabet was developed in central Egypt during the 15th century BC for or by Semitic workers, but only one of these early writings has been deciphered and their exact nature remains open to interpretation.

Late 14th and 15th century pottery from central Arizona, widely traded in the region, has colors and designs which may derive from earlier ware by both Ancestral Pueblo and Mogollon peoples.

Once this islands were covered with savanna on the plains and arid shrubland on the mountainsides, but over 500 years of human habtitation, since colonisation by the Portuguese in the 15th century, nearly all the original vegetation has been cleared by widespread agriculture including the grazing of goats, sheep and cattle and the planting of imported crop species.

Chechnya was a country in the Northern Caucasus which has been in almost constant battle against foreign rule since the 15th century.

It has more than 100 stars which do not vary widely in brightness, mostly being of the 15th and 16th magnitude.

New characters were introduced, such as Terry Duckworth ( Nigel Pivaro ), Curly Watts ( Kevin Kennedy ), Martin Platt ( Sean Wilson ), Reg Holdsworth ( Ken Morley ) and the McDonald family ; one of whom, Simon Gregson, started on the show as Steve McDonald a week after his 15th birthday, and has been in the programme ever since.

San Francisco Chronicle columnist Herb Caen wrote in November 1978, " Just when you think tastelessness has reached its nadir, along comes a punk rock group called The Dead Kennedys, which will play at Mabuhay Gardens on Nov. 22, the 15th anniversary of John F. Kennedy's assassination.

Whether the flag has its origins in a divine sign, a banner of a military order, an ecclesiastical banner, or perhaps something entirely different, Danish literature is no help before the early 15th century.

The double bass is generally regarded as a modern descendant of the string family of instruments that originated in Europe in the 15th century, and as such has been described as a bass Violin.

Attested as early as the late 15th century BC, it is the earliest known form of Greek ( its precursor, Linear A, has not been deciphered to this day ).

The Bharatiya Janata Party, the party with the second largest number of MPs in the 15th Lok Sabha, has an image of being pro-Hindu.

The cuisine of Mexico has evolved through thousands of years of blending indigenous cultures, with later European elements added after the 15th century.

The museums hold various works, including a gorgeous wooden crucifix by an unknown artist of the Sienese school, two beautiful 15th century wooden sculptures, including one of an incredibly moving Madonna by an anonymous artist which has become the symbol of Montalcino on the various posters and pubblicity, and several other sculptures in terracotta which appear to be of the Della Robbia school.

Close by is a Renaissance structure with six round arches, called La Loggia, which was started at the very end of the 14th century and finished in the early 15th, but which has undergone much restoration work over the subsequent centuries.

Hugh Marwick's work has shown the name developing from ' Rollesay ' in the 14th century, through ' Rolsay ' in the 15th, and ' Rowsay ' in the early 16th, with the spelling ' Rousay ' first recorded in 1549.

The library has books from the 15th and 16th centuries.

A halberd ( or Swiss voulge ) is a two-handed pole weapon that came to prominent use during the 14th and 15th centuries but has continued in use as a ceremonial weapon to the present day.

The term Renaissance has also been used to define periods outside of the 15th and 16th centuries.

Independent Wallachia has been on the border of the Ottoman Empire since the 14th century and slowly fell under the suzerainty of the Ottoman Empire during the 15th century.

* Viol: This instrument, developed in the 15th century, commonly has six strings.

It is not certain what should be made of these latter two absences as it is known that Friar Tuck, for one, has been part of the legend since at least the later 15th century.

Robin Hood's role in the traditional May Day games could suggest pagan connections, but that role has not been traced earlier than the early 15th century.

South Korea has a market economy which ranks 15th in the world by nominal GDP and 12th by purchasing power parity ( PPP ), identifying it as one of the G-20 major economies.