Sir Henry Enfield Roscoe (7 January 1833 – 18 December 1915) was a British

chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties. Chemists carefully describe th ...

. He is particularly noted for early work on

vanadium Vanadium is a chemical element with the symbol V and atomic number 23. It is a hard, silvery-grey, malleable transition metal. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer ( pass ...

, photochemical studies, and his assistance in creating Oxo (food), in its earlier liquid form.

Life and work

Sir Henry Enfield Roscoe and Sir Arthur Schuster, sitting in Wellcome V0027639

Henry Enfield Roscoe was born in London, the son of Henry Roscoe (1800–1836) and Maria Roscoe, née Fletcher (1798–1885), and grandson of

William Roscoe William Roscoe (8 March 175330 June 1831) was an English banker, lawyer, and briefly a Member of Parliament. He is best known as one of England's first abolitionists, and as the author of the poem for children ''The Butterfly's Ball, and the G ...

(1753–1831).

Stanley Jevons William Stanley Jevons (; 1 September 183513 August 1882) was an English economist and logician. Irving Fisher described Jevons's book ''A General Mathematical Theory of Political Economy'' (1862) as the start of the mathematical method in eco ...

the Australian economist was a cousin. Roscoe studied at the

Liverpool Institute for Boys The Liverpool Institute High School for Boys was an all-boys grammar school in the English port city of Liverpool. The school had its origins in 1825 but occupied different premises while the money was found to build a dedicated building on ...

and

University College London , mottoeng = Let all come who by merit deserve the most reward , established = , type = Public research university , endowment = £143 million (2020) , budget = ...

. He then went to

Heidelberg Heidelberg (; Palatine German: ') is a city in the German state of Baden-Württemberg, situated on the river Neckar in south-west Germany. As of the 2016 census, its population was 159,914, of which roughly a quarter consisted of students ...

to work under

Robert Bunsen Robert Wilhelm Eberhard Bunsen (; 30 March 1811 – 16 August 1899) was a German chemist. He investigated emission spectra of heated elements, and discovered caesium (in 1860) and rubidium (in 1861) with the physicist Gustav Kirchhoff. The Bu ...

, who became a lifelong friend. He also befriended

William Dittmar Professor William Dittmar FRS FRSE LLD (1833 – 1892) was a German-born scientist renowned as a chemical analyst. He was based largely in Scotland. He did much analytical work on the findings from the Challenger expedition. He was the first to ...

. In 1857, Roscoe returned to England with Dittmar and was appointed to the chair of chemistry at

Owens College Owens may refer to: Places in the United States * Owens Station, Delaware * Owens Township, St. Louis County, Minnesota * Owens, Missouri * Owens, Ohio * Owens, Virginia People * Owens (surname), including a list of people with the name * Ow ...

Manchester Manchester () is a city in Greater Manchester, England. It had a population of 552,000 in 2021. It is bordered by the Cheshire Plain to the south, the Pennines to the north and east, and the neighbouring city of Salford to the west. The ...

, with Dittmar as his assistant. In 1858 the state of the college was such that the ''Manchester Guardian'' called it "a mortifying failure". In the same year Roscoe was accosted by a tramp near the college who asked him if it was the night asylum; he wrote "I replied that it was not but if he would call again in six months' time he might find lodgings there." Roscoe remained at the college until 1886 by which time the Victoria University had been established. In 1881 he was a founder, and first president, of the

Society of Chemical Industry The Society of Chemical Industry (SCI) is a learned society set up in 1881 "to further the application of chemistry and related sciences for the public benefit". Offices The society's headquarters is in Belgrave Square, London. There are semi-i ...

and was also chair of the Manchester Section of the Society. From 1885 to 1895 he was MP for Manchester South. He served on several royal commissions appointed to consider educational questions, in which he was keenly interested, and from 1896 to 1902 was vice-chancellor of the

University of London The University of London (UoL; abbreviated as Lond or more rarely Londin in post-nominals) is a federal public research university located in London, England, United Kingdom. The university was established by royal charter in 1836 as a degr ...

. He was knighted in 1884. Roscoe's scientific work includes a memorable series of researches carried out with Bunsen between 1855 and 1862, in which they laid the foundations of comparative photochemistry. In 1864 they carried out what is reputed to be the first flashlight photography, using

magnesium Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a shiny gray metal having a low density, low melting point and high chemical reactivity. Like the other alkaline earth metals (group 2 of the periodic ...

as a light source. In 1867, Roscoe began an elaborate investigation of vanadium and its compounds, and devised a process for preparing it pure in the metallic state, at the same time showing that the substance which had previously passed for the pure metal was contaminated with

oxygen Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements ...

. In so doing he corrected Berzelius's value for the

atomic mass The atomic mass (''m''a or ''m'') is the mass of an atom. Although the SI unit of mass is the kilogram (symbol: kg), atomic mass is often expressed in the non-SI unit dalton (symbol: Da) – equivalently, unified atomic mass unit (u). 1&n ...

. Roscoe was awarded the 1868

Bakerian Lecture The Bakerian Medal is one of the premier medals of the Royal Society that recognizes exceptional and outstanding science. It comes with a medal award and a prize lecture. The medalist is required to give a lecture on any topic related to physical ...

for this work. He also carried out researches on

niobium Niobium is a chemical element with chemical symbol Nb (formerly columbium, Cb) and atomic number 41. It is a light grey, crystalline, and ductile transition metal. Pure niobium has a Mohs hardness rating similar to pure titanium, and it has s ...

tungsten Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. Tungsten is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a new element in 1781 and first isol ...

uranium Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weak ...

perchloric acid Perchloric acid is a mineral acid with the formula H Cl O4. Usually found as an aqueous solution, this colorless compound is a stronger acid than sulfuric acid, nitric acid and hydrochloric acid. It is a powerful oxidizer when hot, but aqueo ...

, and the

solubility In chemistry, solubility is the ability of a substance, the solute, to form a solution with another substance, the solvent. Insolubility is the opposite property, the inability of the solute to form such a solution. The extent of the solubi ...

ammonia Ammonia is an inorganic compound of nitrogen and hydrogen with the formula . A stable binary hydride, and the simplest pnictogen hydride, ammonia is a colourless gas with a distinct pungent smell. Biologically, it is a common nitrogenous ...

. He was the uncle of

Beatrix Potter Helen Beatrix Potter (, 28 July 186622 December 1943) was an English writer, illustrator, natural scientist, and conservationist. She is best known for her children's books featuring animals, such as '' The Tale of Peter Rabbit'', which was ...

. The mineral

Roscoelite Roscoelite is a green mineral from the mica group that contains vanadium. The chemical formula is K( V3+, Al, Mg)2 Al Si3 O10(O H)2. Crystals of roscoelite take on the monoclinic form, and are from the 2/m point group. The appearance is semi ...

was named after him, due to its vanadium content and Roscoe's work on that element. Roscoe received an honorary doctorate (

LL.D Legum Doctor (Latin: “teacher of the laws”) (LL.D.) or, in English, Doctor of Laws, is a doctorate-level academic degree in law or an honorary degree, depending on the jurisdiction. The double “L” in the abbreviation refers to the early ...

) from the

University of Glasgow , image = UofG Coat of Arms.png , image_size = 150px , caption = Coat of arms Flag , latin_name = Universitas Glasguensis , motto = la, Via, Veritas, Vita , ...

in June 1901. In November 1909 he was sworn in the

Privy Council A privy council is a body that advises the head of state of a state, typically, but not always, in the context of a monarchic government. The word "privy" means "private" or "secret"; thus, a privy council was originally a committee of the mo ...

. He was awarded the

Franklin Institute The Franklin Institute is a science museum and the center of science education and research in Philadelphia, Pennsylvania. It is named after the American scientist and statesman Benjamin Franklin. It houses the Benjamin Franklin National Memori ...

Elliott Cresson Medal The Elliott Cresson Medal, also known as the Elliott Cresson Gold Medal, was the highest award given by the Franklin Institute. The award was established by Elliott Cresson, life member of the Franklin Institute, with $1,000 granted in 1848. The ...

in 1912.

Publications

Roscoe's publications include, besides several elementary books on chemistry that had a wide circulation and were translated into many foreign languages, ''Lectures on Spectrum Analysis'' (1869); a ''Treatise on Chemistry'' (the first edition of which appeared in 1877–1892); ''A New View of Dalton's Atomic Theory'', with Dr Arthur Harden (1896); and an Autobiography (1906). The ''Treatise on Chemistry'', written in collaboration with

Carl Schorlemmer Carl Schorlemmer FRS (30 September 1834 – 27 June 1892) was a German chemist who did research on hydrocarbons and contributed to the study of the history of chemistry. Early life and education Schorlemmer was born in 1834, the son of a joi ...

(1834–1892), who was appointed his private assistant at Manchester in 1859, official assistant in the laboratory in 1861, and professor of organic chemistry in 1874, was long regarded as a standard work. Roscoe's ''Lessons in Elementary Chemistry'' (1866) passed through many editions in the UK and abroad.

Selected works

* * * * *

Commemoration

RSC plaque, Former County Court, Quay Street, Manchester

The Roscoe Building at the University of Manchester was named after Professor Roscoe. It is a large general-purpose teaching facility used for various levels of teaching in Brunswick Street.The University of Manchester: Campus Map
man.ac.uk.

References

External links

*

Henry Enfield Roscoe
(Open University) *
Obituary
(by Charles A. Keane, ''The Analyst'', 1916, 41, 63 – 700) *
Henry Roscoe Papers

John Rylands Library The John Rylands Research Institute and Library is a Victorian era, late-Victorian Gothic Revival architecture, neo-Gothic building on Deansgate in Manchester, England. It is part of the University of Manchester. The library, which opened to t ...

University of Manchester {{DEFAULTSORT:Roscoe, Henry Enfield English chemists Academics of the Victoria University of Manchester Alumni of University College London People associated with the University of London Fellows of the Royal Society 1833 births 1915 deaths Royal Medal winners Knights Bachelor Liberal Party (UK) MPs for English constituencies UK MPs 1885–1886 UK MPs 1886–1892 UK MPs 1892–1895 Vice-Chancellors of the University of London Presidents of the British Science Association Members of the Privy Council of the United Kingdom Manchester Literary and Philosophical Society Recipients of the Dalton Medal