Fors Clavigera was the name given by John Ruskin to a series of letters addressed to British workmen during the 1870s.
 They were published in the form of pamphlets.
 The letters formed part of Ruskin's interest in moral intervention in the social issues of the day on the model of his mentor Thomas Carlyle.
Alastair Sooke ( ; born 1981) is an English art critic and broadcaster, most notable for reporting and commenting on art for the British media and writing and presenting documentaries on art and art history for BBC television and radio.
 His BBC documentaries include "Modern Masters" for BBC One and two three-part series, the "Treasures of Ancient Rome" and the "Treasures of Ancient Greece", for BBC Four.
Bruce Corcoran , often known as Corky, is a recurring fictional character from the Jeeves novels of British comic writer P. G. Wodehouse, being a New York portrait painter turned cartoonist.
 In the 1990s television series "Jeeves and Wooster" he is portrayed by Greg Charles .
 Bruce Corcoran ("Corky"), a New York portrait painter turned cartoonist, asks Bertie to help him ask his wealthy uncle Alexander Worple to accept his girlfriend Muriel Singer so he can marry her.
 In order to get Worple's blessings and to attract the affection of Corky's wealthy uncle, Jeeves produces a plan which involves Corky's girlfriend Muriel Singer writing a book, which pleases Worple.
 At the end Jeeves writes "A Children’s Book of American Birds" in Muriel's place.
 Things go wrong and the uncle ends up Corky's dream marrying her.
 Alexander Worple marries Muriel Singer and Corky has only to paint a portrait of their baby.
 But Worple dislikes Corky's Abstract Expressionist portrait painting of the baby and cuts off Corky's allowance.
 Aunt Agatha comes with NY Chronicle Art Critic Arthur Prysock, an art critic with whom she wants to start and run her own art gallery.
 She is enamoured of the Abstract Expressionist portrait painting by Bruce Corcoran ("Corky"), and asks NY Chronicle Art Critic Arthur Prysock to buy it for her art gallery.
John Ruskin (8 February 1819 – 20 January 1900) was the leading English art critic of the Victorian era, as well as an art patron, draughtsman, watercolourist, a prominent social thinker and philanthropist.
 He wrote on subjects as varied as geology, architecture, myth, ornithology, literature, education, botany and political economy.
 His writing styles and literary forms were equally varied.
 Ruskin also penned essays and treatises, poetry and lectures, travel guides and manuals, letters and even a fairy tale.
 The elaborate style that characterised his earliest writing on art was later superseded by a preference for plainer language designed to communicate his ideas more effectively.
 In all of his writing, he emphasised the connections between nature, art and society.
 He also made detailed sketches and paintings of rocks, plants, birds, landscapes, and architectural structures and ornamentation.
Frederick Wedmore (9 July 1844 – 25 February 1921) was an English art critic and man of letters.
Brian Sewell ( ; 15 July 1931 – 19 September 2015) was an English art critic and media personality.
 He wrote for the "London Evening Standard" and was noted for his acerbic view of conceptual art and the Turner Prize. "
The Guardian" described him as "Britain's most famous and controversial art critic", while the "Standard" called him the "nation’s best art critic", and Artnet News called him the United Kingdom's "most famous and controversial art critic".
Victorian decorative arts refers to the style of decorative arts during the Victorian era.
 Victorian design is widely viewed as having indulged in a grand excess of ornament.
 The Victorian era is known for its interpretation and eclectic revival of historic styles mixed with the introduction of middle east and Asian influences in furniture, fittings, and interior decoration.
 The Arts and Crafts movement, the aesthetic movement, Anglo-Japanese style, and Art Nouveau style have their beginnings in the late Victorian era and gothic period.
Lawrence Reginald Alloway (London, 17 September 1926 – New York City, 2 January 1990) was an English art critic and curator who worked in the United States from the 1960s.
 In the 1950s, he was a leading member of the Independent Group in the UK and in the 1960s was an influential writer and curator in the US.
 He first used the term "mass popular art" in the mid-1950s and used the term "Pop Art" in the 1960s to indicate that art has a basis in the popular culture of its day and takes from it a faith in the power of images.
 He was married to artist Sylvia Sleigh.
George Anderson (fl.
 1736 – 1740), was an English mathematician, about whom nothing is known beyond what is contained in eight letters addressed by him to the celebrated mathematician, William Jones (father of Sir W. Jones, the Orientalist), which were printed from the Macclesfield papers in 1841.
 They give proof of singular ability in treating the most advanced mathematical problems of the time, and by many indications show the writer (contrary to an editorial surmise) to have occupied a respectable position in life.
 The first three are dated from Twickenham.
 August to October 1736; the last was written 27 September 1740, at Leyden, where the writer had just entered upon a ‘train of studies and exercises’ at the university.
 He expressed in 1739 a strong desire to be admitted to the Royal Society, but his name does not appear upon the list of its members.
The New Epicurean: The Delights of Sex, Facetiously and Philosophically Considered, in Graphic Letters Addressed to Young Ladies of Quality is a Victorian erotic novel published by William Dugdale in 1865 and attributed to Edward Sellon.
 The novel is falsely dated "1740", and is written as an eighteenth-century pastiche, composed of a series of letters addressed to various young ladies.

Question: What name did the leading English art critic of the Victorian era give to a series of letters addressed to British workmen during the 1870s?
Answer: Fors Clavigera