Henry Horatio Dixon FRS (19 May 1869,

Dublin Dublin (; , or ) is the capital and largest city of Ireland. On a bay at the mouth of the River Liffey, it is in the province of Leinster, bordered on the south by the Dublin Mountains, a part of the Wicklow Mountains range. At the 2016 ...

– 20 December 1953, Dublin) was a plant

biologist A biologist is a scientist who conducts research in biology. Biologists are interested in studying life on Earth, whether it is an individual cell, a multicellular organism, or a community of interacting populations. They usually specialize ...

and

professor Professor (commonly abbreviated as Prof.) is an academic rank at universities and other post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin as a "person who professes". Professo ...

Trinity College Dublin , name_Latin = Collegium Sanctae et Individuae Trinitatis Reginae Elizabethae juxta Dublin , motto = ''Perpetuis futuris temporibus duraturam'' (Latin) , motto_lang = la , motto_English = It will last i ...

. Along with

John Joly John Joly FRS (1 November 1857 – 8 December 1933) was an Irish physicist and professor of geology at the University of Dublin, known for his development of radiotherapy in the treatment of cancer. He is also known for developing techniques to ...

, he put forward the cohesion-tension theory of water and mineral movement in plants. He was born in Dublin, the youngest of the seven sons of George Dixon, a soap manufacturer and Rebecca (née Yeates) Dixon. He was educated at Rathmines School and

Trinity College, Dublin , name_Latin = Collegium Sanctae et Individuae Trinitatis Reginae Elizabethae juxta Dublin , motto = ''Perpetuis futuris temporibus duraturam'' (Latin) , motto_lang = la , motto_English = It will last i ...

. After studying in Bonn, Germany he in 1894 he was appointed assistant and later full Professor of Botany at Trinity. In 1906 he became Director of the Botanic gardens and in 1910 of the Herbarium also. He had a close working relationship with physicist

and together they developed the cohesion theory of the ascent of sap. In 1907 he married Dorothea Mary, daughter of Sir John H Franks, with whom he raised three sons. He was the father of Hal Dixon and grandfather of

Adrian Dixon Adrian Kendal Dixon FRCR, FRCP, FRCS, FMedSci (born 1948) was the Master of Peterhouse, Cambridge. until 30 June 2016. He is now closely involved in the University of Cambridge administration, both at home and abroad. Dixon was educated at Up ...

, Joly Dixon and Ruth Dixon. In 1908 he was elected a

Fellow of the Royal Society Fellowship of the Royal Society (FRS, ForMemRS and HonFRS) is an award granted by the judges of the Royal Society of London to individuals who have made a "substantial contribution to the improvement of natural knowledge, including mathemati ...

, his application citation describing him as He delivered the society's

Croonian Lecture The Croonian Medal and Lecture is a prestigious award, a medal, and lecture given at the invitation of the Royal Society and the Royal College of Physicians. Among the papers of William Croone at his death in 1684, was a plan to endow a single ...

in 1937. In 1916 he was awarded the

Boyle Medal Boyle is an English, Irish and Scottish surname of Gaelic, Anglo-Saxon or Norman origin. In the northwest of Ireland it is one of the most common family names. Notable people with the surname include: Disambiguation *Adam Boyle (disambiguation), ...

of the

Royal Dublin Society The Royal Dublin Society (RDS) ( ga, Cumann Ríoga Bhaile Átha Cliath) is an Irish philanthropic organisation and members club which was founded as the 'Dublin Society' on 25 June 1731 with the aim to see Ireland thrive culturally and economi ...

In 1949 he was elected an honorary fellow of

References

External links

* {{DEFAULTSORT:Dixon, Henry Horatio 1869 births 1953 deaths Academics of Trinity College Dublin Alumni of Trinity College Dublin Fellows of the Royal Society Honorary Fellows of Trinity College Dublin Irish biologists People educated at Rathmines School