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Birth of William Thompson, Naturalist

William Thompson, Irish naturalist celebrated for his founding studies of the natural history of Ireland, especially in ornithology and marine biology, is born on December 2, 1805, in the booming maritime city of Belfast.

Thompson is the eldest son of William Thompson, a prosperous linen merchant, and Elizabeth Thompson (née Callwell). He has at least two older sisters and several younger brothers. His mother’s father is Robert Callwell, a printer, book-collector, partner in the Commercial Bank, Belfast, and one of the owners of the Northern Star newspaper.

After attending the Royal Belfast Academical Institution (RBAI) from 1818, Thompson is apprenticed in the linen business of William Sinclair in 1821. When his apprenticeship ends, he goes with his cousin George Langtry, later a wealthy shipowner, on a four-month tour (May–September 1826) of the Low Countries, the Rhine, Switzerland, and Italy. On his return to Belfast, he sets up his own business in linen bleaching. Despite early success, losses are incurred. As family and economic circumstances change, he increasingly concentrates on his natural history studies. By 1831 he has given up business. A self-taught naturalist, related by ties of kinship or friendship to most of the liberal and cultivated families of the “northern Athens,” he is shy and fastidious, but is persuaded in 1826 to join the Belfast Natural History Society by its founder, his friend James Lawson Drummond. He reads his first scientific paper, The Birds of the Copeland Islands, to the society on August 13, 1827. In that year he becomes a member of the Belfast Natural History Society’s council, and in 1833 he is chosen as one of the society’s vice-presidents. He is president from 1843 until his death.

Thompson becomes the most important naturalist in mid nineteenth-century Ireland. From 1827 to 1852 he contributes almost eighty papers on Irish natural history to the Magazine of Zoology and Botany and the Proceedings of the Zoological Society of London. From 1836 to 1851 he contributes to The Magazine of Natural History. Invited to travel to the Levant and the Aegean Sea in April–July 1841 with Edward Forbes, professor of natural history at the University of Edinburgh, on HMS Beacon, he observes twenty-three species of birds on migratory flights and publishes “Notice of migratory birds” in The Annals of Natural History. His authoritative observations add considerably to knowledge of the still-to-be-ascertained details of migratory patterns. Indeed, some people refuse to believe, even at that date, that birds do migrate. He publishes other papers in the same journal during 1841–43. At a meeting of the British Association for the Advancement of Science in Glasgow in 1840 his Report on the fauna of Ireland (Vertebrata) attracts favourable notice. He presents and publishes a second and final part enumerating the invertebrates at the Cork meeting of the British Association in August 1843. The two reports form the most complete catalogue of Irish fauna yet published. Thanks to an assiduous correspondence with a network of informants, as well as his own extensive observations, he adds perhaps more than 800 species to Irish fauna lists.

Thompson’s chief work, The Natural History of Ireland, becomes the standard text in Irish zoology in the nineteenth century. The first three volumes, published between 1849 and 1851, deal with birds, particularly their habits and habitats rather than physical descriptions. He is one of the first naturalists to note the effects of industrialisation and other human activities on birdlife. He leaves instructions for his manuscripts on the remaining vertebrates and all the invertebrates to be prepared for publication by Robert Patterson and James Ramsey Garrett. Robert Ball and George Dickie also assist. His notes, though detailed and comprehensive, all require checking, and are found on tiny scraps of paper, even scribbled on the flaps of old envelopes. James Thompson of Macedon, Belfast, painstakingly gums them all into blank notebooks to facilitate the work of his brother’s literary executors, who preface the posthumous publication in 1856 with a lengthy memoir of their friend.

From about 1820 to 1852 Thompson lives with his mother at 1 Donegall Square West, Belfast, commuting from Holywood House, Holywood, County Down, during the summer. His daily routine begins with research, correspondence, or writing for publications for four hours after breakfast. After a two- or three-hour exercise period and dinner, he returns to work for a further two to three hours. He is president of the Belfast Literary Society (1837–39) and also an enthusiastic patron of the visual arts in the city. He enjoys hunting, wildfowling, shooting in Scotland, and gardening, though his health deteriorates from the 1840s.

Early in 1852 Thompson travels to London to make arrangements for that year’s Belfast meeting of the British Association. On February 15 he becomes ill, having suffered a minor stroke. He dies, unmarried, at his Jermyn Street lodgings on the day he is due to return home, February 17, 1852. He is buried in Clifton Street Cemetery, Belfast. He bequeaths his collection to the Belfast Natural History Society, and in March 1852 the Society adds a memorial Thompson Room to its museum, paid for by subscription.

Thompson is a corresponding member of natural history societies in Boston and Philadelphia and has many friends. He is known to assist many other researchers in Ireland, Britain, and the Continent. One of those who thinks highly of his work is Charles Darwin, with whom he corresponds. He also helps many local people, including the poet Francis Davis, with money and practical assistance. He is much loved, and his friends are deeply saddened by his death. His niece, Sydney Mary Thompson, later known by her married surname, Christen, who is born in Belfast, is an amateur naturalist, geologist, and artist, one of the first women to achieve distinction in geology.

(From: “Thompson, William” by Andrew O’Brien and Linde Lunney, Dictionary of Irish Biography, http://www.dib.ie, October 2009)


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Birth of Robert Mallet, the Father of Seismology

Robert Mallet, geophysicist, civil engineer, and inventor who distinguishes himself in research on earthquakes and is sometimes called the Father of Seismology, is born in Dublin on June 3, 1810.

Mallet is the son of factory owner John Mallet. He is educated at Trinity College, Dublin, entering it at the age of 16 and graduating in science and mathematics in 1830 at the age of 20.

Following his graduation, Mallet joins his father’s iron foundry business and helps build the firm into one of the most important engineering works in Ireland, supplying ironwork for railway companies, the Fastnet Rock lighthouse, and a swing bridge over the River Shannon at Athlone. He also helps manufacture the characteristic iron railings that surround Trinity College, and which bear his family name at the base.

Mallet is elected to the Royal Irish Academy in 1832 at the early age of 22. He also enrolls in the British Association for the Advancement of Science in 1835 which helps finance much of his research in seismology.

In 1838 Mallet becomes a life member of the Royal Geological Society of Ireland and serves as its President from 1846–1848. From 1848–1849 he constructs the Fastnet Rock lighthouse, southwest of Cape Clear.

On February 9, 1846, Mallet presents to the Royal Irish Academy his paper On the Dynamics of Earthquakes, which is considered to be one of the foundations of modern seismology. He is also credited with coining the word “seismology” and other related words which he uses in his research. He also coins the term epicentre.

From 1852 to 1858, Mallet is engaged in the preparation of his work, The Earthquake Catalogue of the British Association (1858) and carries out blasting experiments to determine the speed of seismic propagation in sand and solid rock.

On December 16, 1857, the area around Padula, Italy is devastated by the Great Neapolitan earthquake which causes 11,000 deaths. At the time it is the third largest known earthquake in the world and has been estimated to have been of magnitude 6.9 on the Richter Scale. Mallet, with letters of support from Charles Lyell and Charles Darwin, petitions the Royal Society of London and receives a grant of £150 to go to Padula and record at first hand the devastation. The resulting report is presented to the Royal Society as the Report on the Great Neapolitan Earthquake of 1857. It is a major scientific work and makes great use of the then new research tool of photography to record the devastation caused by the earthquake. In 1862, he publishes the Great Neapolitan Earthquake of 1857: The First Principles of Observational Seismology in two volumes. He brings forward evidence to show that the depth below the Earth’s surface, from where the impulse of the Neapolitan earthquake originated, is about 8–9 geographical miles.

One of Mallet’s papers is Volcanic Energy: An Attempt to develop its True Origin and Cosmical Relations, in which he seeks to show that volcanic heat may be attributed to the effects of crushing, contortion, and other disturbances in the crust of the earth. The disturbances leading to the formation of lines of fracture, more or less vertical, down which water would find its way, and if the temperature generated be sufficient volcanic eruptions of steam or lava would follow.

Mallet is elected Fellow of the Royal Society in 1854, and in 1861 moves to London, where he becomes a consulting engineer and edits The Practical Mechanic’s Journal. He is awarded the Telford Medal by the Institution of Civil Engineers in 1859, followed by the Cunningham Medal of the Royal Irish Academy for his research into the theory of earthquakes in 1862, and the Wollaston Medal of the Geological Society of London in 1877, the Geological Society’s highest award.

Blind for the last seven years of his life, Robert Mallet dies at Stockwell, London, on November 5, 1881, and is buried at West Norwood Cemetery.


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Birth of Eleanor Charlotte Butler, Recluse of Llangollen

Eleanor Charlotte Butler, recluse of Llangollen, is born in Cambrai, France, on May 11, 1739.

Butler is the youngest daughter of Walter Butler of Garryricken, County Tipperary, and his wife, Ellen (née Morres), of Latargh, County Tipperary. Her family are members of the old Catholic gentry, and her father is the sole lineal representative of James Butler, 2nd Duke of Ormonde. In 1740 her family returns to the Garryricken estate, where she spends part of her childhood. She is educated by the English Benedictine nuns of the convent of Our Lady of Consolation in Cambrai, where her Jacobite grand-aunt is a pensioner. Reared in the liberal and anti-clerical environment at Cambrai, she is open about her opposition to Irish Catholicism. She is also well read in literature.

By the time Butler returns to Ireland, her brother John had claimed the family titles and was recognised as 16th Earl of Ormond. Though he never uses the title, his sisters are recognised as the daughters of an earl. As the family is impoverished, and she is not disposed to marriage, a decade is passed in unhappiness. Then, in 1768, the thirteen-year-old Sarah Ponsonby arrives in Kilkenny to attend a local school. Following her visit to the Butler home at Kilkenny Castle, and despite the difference in age, the two form an immediate friendship and corresponded secretly, having discovered their mutual interest in the arts and Rousseau‘s ideal of pastoral retirement.

Ponsonby, upon finishing school, is sent to live with relatives at nearby Woodstock Estate, and there is subject to the uninvited attention of a middle-aged guardian. Butler is discontented with her life and the prospects of her family’s wish to send her back to Cambrai, so the two plan to leave their difficulties behind and settle in England. In their first attempt to flee in March 1778, they leave for Waterford disguised as men and wielding pistols, but their families manage to catch up with them. Butler is then sent to the home of her brother-in-law, Thomas ‘Monarch’ Kavanagh of Borris, County Carlow, but makes a second, successful attempt and runs away to find Ponsonby at Woodstock Estate. Her persistence wins out when both families finally capitulate and accepted their plans to live together.

Butler and Ponsonby set out for Wales in May 1778 and, after an extensive tour of Wales and Shropshire, eventually settle in Llangollen Vale, where they rent a cottage which is renamed Plas Newydd. They are accompanied by Mary Carryll, a former servant of the Woodstock household, who remains in their service until her death in 1809. Having made a deliberate decision to retire from the world, they spend the greater part of their days corresponding with friends, reading, building up a large library and making alterations to Plas Newydd, which takes on a fashionable Gothic look. Their garden, landscaped under their direction, becomes a popular attraction for visitors. Butler meticulously records their daily routine in a series of journals, some of which are now lost.

Their seclusion, eccentricities, semi-masculine dress and short-cropped powdered hair gain them notoriety, and it becomes fashionable to call on them. Their numerous and illustrious visitors include Hester Lynch Piozzi, Charles and Erasmus Darwin, Sir Walter Scott, Sir Arthur Wellesley, the Duke of Gloucester and Josiah Wedgwood. In 1792 they entertain Stéphanie Caroline Anne Syms, later that year to become the wife of Lord Edward FitzGerald, and her mother, Madame de Genlis. Following the arrest of Edward FitzGerald in 1798, Stéphanie and her suite flee to London and on May 27 pass through Llangollen, where the events in Dublin are already known. On hearing that she is staying in the local inn, Butler and Ponsonby invite her to call in. However, when she wishes to stay for the day, their apprehension of Jacobinism leads them to persuade her “principally for her own sake and a little for [our] own to proceed as fast and as incognito as possible for London.”

Both Anna Seward and William Wordsworth, who stay at Plas Newydd, write poems celebrating their friendship, and Lord Byron sends them a copy of The Corsair. Owing to her support of the Bourbons, Butler is sent the Croix St. Louis, which she wears about her neck. Though generally considered a hospitable couple, Seward, who is a good friend, admits that the “incessant homage” they received could make Butler “haughty and imperious,” while Lady Lonsdale thinks her “very clever, very odd.” Their celebrity does have its drawbacks: an article in the General Evening Post of July 24, 1790, entitled “Extraordinary female affection,” suggests indirectly that their relationship is unnatural. Butler is particularly angered by this publicity and appeals to Edmund Burke for legal advice. Their retirement is also continually dogged by financial difficulties. They live mainly off their respective allowances and Butler’s royal pension (granted through the influence of Lady Frances Douglas), but spend beyond their means and are often in debt. To add to their problems, Butler receives no mention in her father’s will. However, the Gothic eccentricities of their cottage, which they succeed over time in purchasing, and garden attract even the interest of Queen Charlotte.

Though it is claimed that neither woman spends a night away from Plas Newydd, in January 1786 they stay with their friends, the Barretts of Oswestry, and that September they visit Sir Henry Bridgeman of Weston Park, near Staffordshire. In June 1797 they take their only holiday, at the coastal resort of Barmouth. Despite their isolation they are well informed about international events and society gossip. The Irish serjeant-at-law Charles Kendal Bushe recalls how they gave him all the news of Dublin, London, Cheltenham, and Paris.

In later years Butler’s eyesight deteriorates, preventing her from keeping her journal. She is secretly painted as an old woman with Ponsonby by Lady Mary Leighton and sketched by Lady Henrietta Delamere. A distinctive, anonymous silhouette shows the two generously proportioned women in traditional riding habits (National Portrait Gallery, London). Butler dies on June 2, 1829, and is buried alongside Carryll at Llangollen church. Sarah Ponsonby is subsequently buried with them.

(From: “Butler, Lady (Charlotte) Eleanor” by Frances Clarke, Dictionary of Irish Biography, http://www.dib.ie)


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Death of Lady Eleanor Charlotte Butler, Recluse of Llangollen

Lady Eleanor Charlotte Butler, daughter of the 16th Earl of Ormonde and recluse of Llangollen, dies on June 2, 1829.

Butler is born in Cambrai, France, the youngest daughter of Walter Butler, 16th Earl of Ormonde, of Garryricken, County Tipperary, and his wife, Ellen (née Morres), of Latargh, County Tipperary. Her family are members of the old Catholic gentry, and her father is the sole lineal representative of James Butler, 2nd Duke of Ormonde. In 1740 her family returns to the Garryricken estate, where she spends part of her childhood. She is educated by the English Benedictine nuns of the convent of Our Lady of Consolation in Cambrai, where her Jacobite grand-aunt is a pensioner. Reared in the liberal and anti-clerical environment at Cambrai, she is open about her opposition to Irish Catholicism. She is also well read in literature.

By the time Butler returns to Ireland, her brother John has claimed the family titles and is recognised as 17th Earl of Ormonde. Though he never uses the title, his sisters are recognised as the daughters of an earl. As the family is impoverished, and she is not disposed to marriage, a decade is passed in unhappiness. Then in 1768 the thirteen-year-old Sarah Ponsonby arrives in Kilkenny to attend a local school. Following her visit to the Butler home at Kilkenny Castle, and despite the difference in age, the two form an immediate friendship and correspond secretly, having discovered their mutual interest in the arts and Jean-Jacques Rousseau‘s ideal of pastoral retirement.

Ponsonby, on finishing school, is sent to live with relatives at the nearby Woodstock Estate, and there is subject to the uninvited attention of a middle-aged guardian. Butler is discontented with her life and the prospects of her family’s wish to send her back to Cambrai, so the two plan to leave their difficulties behind and settle in England. In their first attempt to flee in March 1778, they leave for Waterford disguised as men and wielding pistols, but their families manage to catch up with them. Butler is then sent to the home of her brother-in-law Thomas ‘Monarch’ Kavanagh of Borris, County Carlow, but makes a second, successful attempt and runs away to find Ponsonby at the Woodstock Estate. Her persistence wins out when both families finally capitulate and accept their plans to live together.

The two set out for Wales in May 1778 and, after an extensive tour of Wales and Shropshire, eventually settle in Llangollen Vale, where they rent a cottage which is renamed Plas Newydd. They are accompanied by Mary Carryl, a former servant of the Woodstock household, who remains in their service until her death in 1809. Having made a deliberate decision to retire from the world, they spend the greater part of their days corresponding with friends, reading, building up a large library and making alterations to Plas Newydd, which takes on a fashionable Gothic look. Their garden, landscaped under their direction, becomes a popular attraction for visitors. Butler meticulously records their daily routine in a series of journals, some of which are now lost.

Their seclusion, eccentricities, semi-masculine dress and short-cropped powdered hair gain them notoriety, and it becomes fashionable to call on them. Their numerous and illustrious visitors include Hester Lynch Piozzi, Charles and Erasmus Darwin, Sir Walter Scott, Sir Arthur Wellesley, the Duke of Gloucester and Josiah Wedgwood. In 1792 they entertain Pamela Sims, later that year to become the wife of Lord Edward FitzGerald, and her mother Madame de Genlis. Following the arrest of Edward FitzGerald in 1798, Pamela and her suite flee to London and on May 27 pass through Llangollen, where the events in Dublin are already known. On hearing that Pamela FitzGerald is staying in the local inn, Butler and Ponsonby invite her to call in. However, when Pamela wishes to stay for the day, their apprehension of Jacobinism leads them to persuade her “principally for her own sake and a little for [our] own to proceed as fast and as incognito as possible for London.”

Both Anna Seward and William Wordsworth, who stay at Plas Newydd, write poems celebrating their friendship, and Lord Byron sends them a copy of The corsair. Owing to her support of the Bourbons, Butler is sent the Croix St. Louis, which she wears about her neck. Their celebrity does have its drawbacks: an article in the General Evening Post of July 24, 1790, entitled ‘Extraordinary female affection’, suggests indirectly that their relationship is unnatural. Butler is particularly angered by this publicity and appeals to Edmund Burke for legal advice. Their retirement is also continually dogged by financial difficulties. They live mainly off their respective allowances and Butler’s royal pension, granted through the influence of Lady Frances Douglas, but spend beyond their means and are often in debt. To add to their problems, Butler receives no mention in her father’s will. However, the Gothic eccentricities of their cottage, which they succeed over time in purchasing, and garden attract even the interest of Queen Charlotte.

Though it is claimed that neither woman spent a night away from Plas Newydd, in January 1786 they stay with their friends the Barretts of Oswestry, and that September they visit Sir Henry Bridgeman of Weston Park, near Staffordshire. In June 1797 they take their only holiday, at the coastal resort of Barmouth. Despite their isolation they are well informed about international events and society gossip. The Irish serjeant-at-law Charles Kendal Bushe recalls how they gave him all the news of Dublin, London, Cheltenham, and Paris. In later years Butler’s eyesight deteriorates, preventing her from keeping her journal. She is secretly painted as an old woman with Ponsonby by Lady Mary Leighton and sketched by Lady Henrietta Delamere. A distinctive, anonymous silhouette shows the two generously proportioned women in traditional riding habits (National Portrait Gallery, London).

Butler dies on June 2, 1829, and is buried alongside Mary Carryl at St. Collen’s Church in Llangollen. Sarah Ponsonby is subsequently buried with them.

(From: “Butler, Lady (Charlotte) Eleanor” by Frances Clarke, Dictionary of Irish Biography, http://www.dib.ie)


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Birth of Robert Gibbings, Wood Engraver & Sculptor

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Robert John Gibbings, Irish artist and author most noted for his work as a wood engraver and sculptor, and for his books on travel and natural history, is born into a middle-class family in Cork, County Cork on March 23, 1889. Along with Noel Rooke he is one of the founder members of the Society of Wood Engravers in 1920 and is a major influence in the revival of wood engraving in the twentieth century.

Gibbings’ father, the Reverend Edward Gibbings, is a Church of Ireland minister. His mother, Caroline, is the daughter of Robert Day, Fellow of the Royal Society of Antiquaries of Ireland and president of The Cork Historical and Archaeological Society. He grows up in the town of Kinsale where his father is the rector of St. Multose Church.

Gibbings studies medicine for three years at University College Cork before deciding to persuade his parents to allow him to take up art. He studies under the painter Harry Scully in Cork and later at the Slade School of Fine Art and the Central School of Art and Design.

During World War I Gibbings serves in the Royal Munster Fusiliers and is wounded at Gallipoli before eventually being invalided out of the army in 1918. He then resumes his studies in London.

Gibbings is very much at the centre of developments in wood engraving. He is a founder member and leading light of the Society of Wood Engravers, which he sets up with Noel Rooke in 1920. In 1922 he contributes two wood engravings, “Clear Waters” and “Hamrun,” to Contemporary English Woodcuts, an anthology of wood engravings produced by Thomas Balston, a director at Gerald Duckworth & Company and an enthusiast for the new style of wood engravings. In 1923 he receives a commission for a set of wood engravings for The Lives of Gallant Ladies for the Golden Cockerel Press, his most important commission to date at 100 guineas.

Gibbings is working on the wood engravings The Lives of Gallant Ladies when Hal Taylor, the owner of the press, becomes very ill with tuberculosis and has to put it up for sale. He seeks a loan from a friend, Hubert Pike, a director of Bentley Motors, to buy the press. He takes over in February 1924 and owns and runs the press until 1933.

Gibbings illustrates numerous books on travel and natural history, including Charles Darwin’s The Voyage of the Beagle, and writes a series of bestselling river books, notably Sweet Thames Run Softly. He does a huge amount to popularise the subject of natural history, travelling extensively through Polynesia, Bermuda and the Red Sea to gather inspiration for his work.

Gibbings is the first man to draw underwater, the illustrations filling his Penguin classic Blue Angels and Whales. He is one of the first natural history presenters on the BBC.

In September 1955 Gibbings and his wife, Patience, purchase Footbridge Cottage, a tiny beehive of a cottage in Gibbings’s words, in Long Wittenham on the banks of the River Thames. Life there suits him, and he has a period of tranquility that he had not known previously. They live there until he dies of cancer in an Oxford hospital on January 19, 1958. He is buried in the churchyard at Long Wittenham. The grave is marked by a simple headstone featuring his device of a crossed quill and graver, carved by Michael Black, a young sculptor who is a friend of Gibbings.


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Death of Robert Mallet, the Father of Seismology

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Robert Mallet, geophysicist, civil engineer, and inventor who distinguishes himself in research on earthquakes and is sometimes called the Father of Seismology, dies on November 5, 1881.

Mallet is born in Dublin on June 3, 1810, the son of factory owner John Mallet. He is educated at Trinity College, Dublin, entering it at the age of 16 and graduating in science and mathematics in 1830 at the age of 20.

Following his graduation, he joins his father’s iron foundry business and helps build the firm into one of the most important engineering works in Ireland, supplying ironwork for railway companies, the Fastnet Rock lighthouse, and a swing bridge over the River Shannon at Athlone. He also helps manufacture the characteristic iron railings that surround Trinity College, and which bear his family name at the base.

Mallet is elected to the Royal Irish Academy in 1832 at the early age of 22. He also enrolls in the British Association for the Advancement of Science in 1835 which helps finance much of his research in seismology.

In 1838 he becomes a life member of the Royal Geological Society of Ireland and serves as its President from 1846–1848. From 1848–1849 he constructs the Fastnet Rock lighthouse, southwest of Cape Clear.

On February 9, 1846, he presents to the Royal Irish Academy his paper On the Dynamics of Earthquakes, which is considered to be one of the foundations of modern seismology. He is also credited with coining the word “seismology” and other related words which he uses in his research. He also coins the term epicentre.

From 1852 to 1858, he is engaged in the preparation of his work, The Earthquake Catalogue of the British Association (1858) and carries out blasting experiments to determine the speed of seismic propagation in sand and solid rock.

On December 16, 1857, the area around Padula, Italy is devastated by the Great Neapolitan earthquake which causes 11,000 deaths. At the time it is the third largest known earthquake in the world and has been estimated to have been of magnitude 6.9 on the Richter Scale. Mallet, with letters of support from Charles Lyell and Charles Darwin, petitions the Royal Society of London and receives a grant of £150 to go to Padula and record at first hand the devastation. The resulting report is presented to the Royal Society as the Report on the Great Neapolitan Earthquake of 1857. It is a major scientific work and makes great use of the then new research tool of photography to record the devastation caused by the earthquake. In 1862, he publishes the Great Neapolitan Earthquake of 1857: The First Principles of Observational Seismology in two volumes. He brings forward evidence to show that the depth below the Earth’s surface, from where the impulse of the Neapolitan earthquake originated, is about 8–9 geographical miles.

One of Mallet’s papers is Volcanic Energy: An Attempt to develop its True Origin and Cosmical Relations, in which he seeks to show that volcanic heat may be attributed to the effects of crushing, contortion, and other disturbances in the crust of the earth. The disturbances leading to the formation of lines of fracture, more or less vertical, down which water would find its way, and if the temperature generated be sufficient volcanic eruptions of steam or lava would follow.

Mallet is elected Fellow of the Royal Society in 1854, and in 1861 moves to London, where he becomes a consulting engineer and edits The Practical Mechanic’s Journal. He is awarded the Telford Medal by the Institution of Civil Engineers in 1859, followed by the Cunningham Medal of the Royal Irish Academy for his research into the theory of earthquakes in 1862, and the Wollaston Medal of the Geological Society of London in 1877, the Geological Society’s highest award.

Blind for the last seven years of his life, Robert Mallet dies at Stockwell, London, on November 5, 1881, and is buried at West Norwood Cemetery.