Joseph Barcroft
Encyclopedia
Sir Joseph Barcroft CBE
CBE
CBE and C.B.E. are abbreviations for "Commander of the Order of the British Empire", a grade in the Order of the British Empire.Other uses include:* Chemical and Biochemical Engineering...

, FRS  (26 July 1872 – 21 March 1947) was a British
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 physiologist best known for his studies of the oxygenation
Oxygenation (medical)
Oxygenation occurs when oxygen molecules enter the tissues of the body. For example, blood is oxygenated in the lungs, where oxygen molecules travel from the air and into the blood...

 of blood
Blood
Blood is a specialized bodily fluid in animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells....

.

Born in Newry
Newry
Newry is a city in Northern Ireland. The River Clanrye, which runs through the city, formed the historic border between County Armagh and County Down. It is from Belfast and from Dublin. Newry had a population of 27,433 at the 2001 Census, while Newry and Mourne Council Area had a population...

, County Down
County Down
-Cities:*Belfast *Newry -Large towns:*Dundonald*Newtownards*Bangor-Medium towns:...

 into a Quaker family, he was the son of Henry Barcroft DL
Deputy Lieutenant
In the United Kingdom, a Deputy Lieutenant is one of several deputies to the Lord Lieutenant of a lieutenancy area; an English ceremonial county, Welsh preserved county, Scottish lieutenancy area, or Northern Irish county borough or county....

 and Anna Richardson Malcomson of The Glen, Newry - a property purchased for his parents by his mother's uncle, John Grubb Richardson
John Grubb Richardson
John Grubb Richardson was a major Irish industrialist who founded the model village of Bessbrook near Newry, in what is now Northern Ireland...

 and adjoining his own estate in Bessbrook
Bessbrook
Bessbrook is a village in County Armagh, Northern Ireland. It lies about three miles northwest of Newry and close to the main Dublin–Belfast road and rail line...

. He was initially educated at Bootham School
Bootham School
Bootham School is an independent Quaker boarding school in the city of York in North Yorkshire, England. It was founded by the Religious Society of Friends in 1823. It is close to York Minster. The current headmaster is Jonathan Taylor. The school's motto Membra Sumus Corporis Magni means "We...

, York
York
York is a walled city, situated at the confluence of the Rivers Ouse and Foss in North Yorkshire, England. The city has a rich heritage and has provided the backdrop to major political events throughout much of its two millennia of existence...

 and later at The Leys School
The Leys School
The Leys School is a co-educational Independent school, located in Cambridge, England, and is a day and boarding school for about 550 pupils aged between 11 and 18 years...

, Cambridge. Sir Joseph, knighted in 1935, married Mary Agnetta Ball, daughter of Sir Robert S. Ball, in 1903.

He received his degree in Medicine and Science in 1896 from Cambridge University, and immediately began his studies of haemoglobin
Hemoglobin
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates, with the exception of the fish family Channichthyidae, as well as the tissues of some invertebrates...

. In May, 1910 he was elected a Fellow of the Royal Society and would be awarded their Royal Medal
Royal Medal
The Royal Medal, also known as The Queen's Medal, is a silver-gilt medal awarded each year by the Royal Society, two for "the most important contributions to the advancement of natural knowledge" and one for "distinguished contributions in the applied sciences" made within the Commonwealth of...

 in 1922 and their Copley medal
Copley Medal
The Copley Medal is an award given by the Royal Society of London for "outstanding achievements in research in any branch of science, and alternates between the physical sciences and the biological sciences"...

 in 1943. He would also deliver their Croonian Lecture
Croonian Lecture
The Croonian Lectures are prestigious lectureships 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 one lectureship at both the Royal Society and the Royal College of Physicians...

 in 1935.

In the course of his research, he did not hesitate to use himself as a test subject. For example, during the First World War
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

, when he was called to Royal Engineers Experimental Station
Porton Down
Porton Down is a United Kingdom government and military science park. It is situated slightly northeast of Porton near Salisbury in Wiltshire, England. To the northwest lies the MoD Boscombe Down test range facility which is operated by QinetiQ...

 (near Salisbury
Salisbury
Salisbury is a cathedral city in Wiltshire, England and the only city in the county. It is the second largest settlement in the county...

) to carry out experiments on asphyxia
Asphyxia
Asphyxia or asphyxiation is a condition of severely deficient supply of oxygen to the body that arises from being unable to breathe normally. An example of asphyxia is choking. Asphyxia causes generalized hypoxia, which primarily affects the tissues and organs...

ting gas, he exposed himself to an atmosphere of poisonous hydrogen cyanide. On another occasion he remained for seven days in a glass chamber in order to calculate the minimum quantity of oxygen required for the survival of the human organism, and another time he exposed himself to such a low temperature that he collapsed into unconsciousness.

He also studied the physiology of oxygenation at extreme altitudes, and for this purpose he organized expeditions to the peak of Tenerife
Tenerife
Tenerife is the largest and most populous island of the seven Canary Islands, it is also the most populated island of Spain, with a land area of 2,034.38 km² and 906,854 inhabitants, 43% of the total population of the Canary Islands. About five million tourists visit Tenerife each year, the...

 (1910), to Monte Rosa
Monte Rosa
The Monte Rosa Massif is a mountain massif located in the eastern part of the Pennine Alps. It is located between Switzerland and Italy...

 (1911), and to the Peruvian Andes
Andes
The Andes is the world's longest continental mountain range. It is a continual range of highlands along the western coast of South America. This range is about long, about to wide , and of an average height of about .Along its length, the Andes is split into several ranges, which are separated...

 (1922).

Between 1902 and 1905 he was a Governor of Leighton Park School
Leighton Park School
Leighton Park School is a co-educational Quaker independent school for both day and boarding pupils. It is situated in the large town of Reading in Berkshire, in South East England...

, the Quaker School in Reading. From 1925 to 1937 he held the chair of physiology at Cambridge. His final research, begun in 1933, concerned fetal
Fetus
A fetus is a developing mammal or other viviparous vertebrate after the embryonic stage and before birth.In humans, the fetal stage of prenatal development starts at the beginning of the 11th week in gestational age, which is the 9th week after fertilization.-Etymology and spelling variations:The...

 respiration
Respiration (physiology)
'In physiology, respiration is defined as the transport of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction...

. He was elected a Foreign Honorary Member of the American Academy of Arts and Sciences
American Academy of Arts and Sciences
The American Academy of Arts and Sciences is an independent policy research center that conducts multidisciplinary studies of complex and emerging problems. The Academy’s elected members are leaders in the academic disciplines, the arts, business, and public affairs.James Bowdoin, John Adams, and...

 in 1938.

During the first years of the Second World War
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 he was again summoned to Porton Down
Porton Down
Porton Down is a United Kingdom government and military science park. It is situated slightly northeast of Porton near Salisbury in Wiltshire, England. To the northwest lies the MoD Boscombe Down test range facility which is operated by QinetiQ...

 to consult on chemical weapons. He died in Cambridge
Cambridge
The city of Cambridge is a university town and the administrative centre of the county of Cambridgeshire, England. It lies in East Anglia about north of London. Cambridge is at the heart of the high-technology centre known as Silicon Fen – a play on Silicon Valley and the fens surrounding the...

 in 1947.

Further reading

Most of this article was drawn from the corresponding article on the Italian Wikipedia retrieved (June 12, 2006).
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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