Sir Julian Sorell Huxley FRS (22 June 1887–14 February 1975) was an English evolutionary biologist, humanist and internationalist. He was well-known for his presentation of science in books and articles, and on radio and television. He was Secretary of the Zoological Society of London (1935-1942), the first director of UNESCO, and a founding member of the World Wildlife Fund. Huxley was awarded UNESCO's Kalinga Prize for the popularisation of science in 1953, and the Darwin Medal of the Royal Society in 1956 for his work on evolution. He was knighted in 1958.

Huxley came from the distinguished Huxley family. His brother was the writer Aldous Huxley, and his half-brother a fellow biologist and Nobel laureate, Andrew Huxley; his father was writer and editor Leonard Huxley; and his paternal grandfather was Thomas Henry Huxley, a friend and supporter of Charles Darwin and protagonist of evolution. His maternal grandfather was the academic Tom Arnold, great-uncle poet Matthew Arnold and great-grandfather Thomas Arnold of Rugby School.

Huxley was born on June 22, 1887, at the London house of his aunt, the novelist Mary Augusta Ward, while his father was attending the jubilee celebrations of Queen Victoria. Huxley grew up at the family home in Surrey, England where he showed an early interest in nature, as he was given lessons by his grandfather, Thomas Henry Huxley. When he heard THH talking at dinner about the lack of parental care in fish, Julian piped up with "What about the stickleback, Gran'pater?"

At the age of thirteen Huxley attended Eton College as a King's Scholar, and continued to develop scientific interests; his grandfather had influenced the school to build science laboratories much earlier. At Eton he developed an interest in ornithology, guided by science master W.D. 'Piggy' Hill. "Piggy was a genius as a teacher... I have always been grateful to him." In 1905 Huxley won a scholarship in Zoology to Balliol College, Oxford.

In 1906, after a summer in Germany, Huxley took his place in Oxford, where he developed a particular interest in embryology and protozoa. In the autumn term of his final year, 1908, his mother died from cancer at only 46: a terrible blow for her husband, three sons and young eight-year old daughter Margaret. In 1909 he graduated with first class honours, and spent that July at the international gathering for the centenary of Darwin's birth, held at the University of Cambridge. Happily, it was also the fiftieth anniversary of the publication of the Origin of species.

Huxley got a scholarship to spend a year at the Naples Marine Biological Station where he developed his interest in developmental biology by investigating sea squirts and sea urchins. In 1910 he was appointed as Demonstrator in the Department of Zoology and Comparative Anatomy at Oxford University, and started on the systematic observation of the courtship habits of water birds such as redshanks (which are waders) and grebes (which are divers). Bird watching in childhood had given Huxley his interest in ornithology, and he helped devise systems for the surveying and conservation of birds. His particular interest was bird behaviour, especially the courtship of water birds. His 1914 paper on the Great Crested Grebe, later published as a book, was a landmark in avian ethology; his invention of vivid labels for the rituals (such as 'penguin dance', 'plesiosaurus race' etc.) made the ideas memorable and interesting to the general reader.

In 1912 his life took a new turn. He was asked by Edgar Odell Lovett to take the lead in setting up the new Department of Biology at the newly created Rice Institute in Houston, Texas, which he accepted, planning to start the following year. Huxley made an exploratory trip to the USA in September 1912, visiting a number of leading universities as well as the Rice Institute. At T.H. Morgan's fly lab (Columbia University) he invited H.J. Muller to join him at Rice. Muller agreed to be his deputy, and hurried to complete his PhD, moving to Houston for the beginning of the 1915-1916 academic year. At Rice, Muller taught biology and continued Drosophila lab work.

Before taking up the post of Assistant Professor at the Rice Institute, Huxley spent a year in Germany preparing for his demanding new job. Working in a laboratory just months before the outbreak of World War I, Huxley overheard fellow academics comment on a passing aircraft "it will not be long before those planes are flying over England". In 1913 Huxley had a nervous breakdown after the break-up of his relationship with 'K' , and rested in a nursing home. His depression returned the next year, and he and his brother Trevenen (two years his junior) ended up in the same nursing home. Sadly, Trevenen hanged himself. Depressive illness had afflicted others in the Huxley family: see discussion in Thomas Henry Huxley.

One pleasure of Huxley's life in Texas was the sight of his first humming-bird, though his visit to McIlhenny's Bird Reserve on Avery Island in Louisiana was much more significant. McIlhenny owned the whole island, using it to produce his famous Tabasco sauce. Birds were his hobby, and he set up a sanctuary. There Huxley found egrets, herons and bitterns, all of which (like the grebes) exhibit mutual courtship, with the pairs displaying to each other, and with the secondary sexual characters equally developed in both sexes.

In September 1916 Huxley returned to England from Texas to assist in the war effort, working in intelligence, first at GCHQ and then in northern Italy. After the war he became a Fellow at New College Oxford and was made Senior Demonstrator in the University Department of Zoology. In fact, Huxley took the place of his old tutor Geoffrey Smith, who had been killed in the battle of the Somme on the Western Front. On the first day of the Somme, the British had nearly 60 thousand casualites including nearly 20 thousand dead; all told there were over a million casualties (all combatants) during the four months of the battle. Peacetime institutions were greatly damaged by this terrible war, and Oxford lost many staff and students.

In 1919 Huxley married Juliette Baillot. She was a French Swiss girl whom he had met at Garsington Manor, the country house of Lady Ottoline Morrell, a Bloomsbury Group socialite with a penchant for artists and intellectuals. The newly-weds' life together included students, faculty wives, grebes and, unfortunately, another depressive breakdown, this time rather serious. From his wife's autobiography it seems his mental illness took the form of a bipolar disorder, with the depressive phases being of moderate to severe intensity. It took a long time for him to recover on this occasion, but despite this he left a legacy of students who admired him, and who became leaders in zoology for the next thirty or forty years. E.B. Ford always remembered his openness and encouragement at the start of his career.

In 1925 Huxley moved to King's College London as Professor of Zoology, but in 1927 resigned his chair to work full time with H.G. Wells and his son G.P. Wells on The Science of Life (see below). For some time Huxley retained his room at King's College, and continued as Honorary Lecturer in the Zoology Department. From 1927-31 he was also Fullerian Professor of Physiology at the Royal Institution, where he gave an annual lectures series.

In 1929 Huxley visited East Africa to advise the Colonial Office on education in British East Africa (for the most part Kenya, Uganda and Tanganyika). He discovered that the wildlife on the Serengeti plain was almost undisturbed because the tsetse fly (the vector for the trypanosome parasite which causes sleeping sickness in humans) prevented human settlement there. He tells about these experiences in Africa view (1931), and so does his wife. She reveals that he fell in love with an 18-year old American girl on board ship (when Juliette was not present), and then presented Juliette with his ideas for an open marriage! "What Julian really wanted was... a definite freedom from the conventional bonds of marriage."

As the 1930s started, Huxley travelled widely and took part in a variety of activities which were partly scientific and partly political. In 1931 Huxley visited the USSR at the invitation of Intourist, where initially he admired the results of social and economic planning on a large scale. Later, back in the United Kingdom, he became a founding member of the think tank Political and Economic Planning.

In the 1930s Huxley visited Kenya and other East African countries to see the conservation work, including the creation of national parks, which was happening in the few areas that remained uninhabited due to malaria. From 1933-38 he was a member of the committee for Lord Hailey's Africa Survey.

In 1935 Huxley was appointed Secretary to the Zoological Society of London, and spent much of the next seven years running the society and its zoological gardens, the London Zoo and Whipsnade Park, alongside his writing and research. The previous Director, Peter Chalmers-Mitchell, had been in post for many years, and had skillfully avoided conflict with the Fellows and Council. Things were rather different when Huxley arrived. Huxley was not a skilled administrator; his wife said "He was impatient... and lacked tact". He instituted a number of changes and innovations, more than some approved of. For example, Huxley introduced a whole range of ideas designed to make the Zoo child-friendly. Today, this would pass without comment; but then it was more controversial. Fellows and their guests had the privilege of free entry on Sundays, a closed day to the general public. Today, that would be unthinkable. Huxley's mild suggestion (that the guests should pay) encroached on territory the Fellows thought was theirs by right.

In 1941 Huxley was invited to the United States on a lecturing tour, and generated some controversy by saying that he thought the United States should join World War II: a few weeks later came the attack on Pearl Harbor. When the USA joined the war, he found it difficult to get a passage back to the UK, and his lecture tour was extended. The Council of the Zoological Society — "a curious assemblage... of wealthy amateurs, self-perpetuating and autocratic" — uneasy with their Secretary, used this as an opportunity to remove him by the rather unpleasant tactic of abolishing his post "to save expenses". Since Huxley had taken a half-salary cut at the start of the war, and no salary at all whilst he was in America, the Council's action was widely read as a personal attack on Huxley. A public controversy ensued, but eventually the Council got its way.

In 1943 he was asked by the British government to join the Colonial Commission on Higher Education. The Commission's remit was to survey the West African Commonwealth countries for suitable locations for the creation of universities. There he acquired a disease, went down with hepatitis, and had a serious mental breakdown. He was completely disabled, treated with ECT, and took a full year to recover. He was 55.

Huxley, a lifelong internationalist with a concern for education, got involved in the creation of the United Nations Educational, Scientific and Cultural Organization (UNESCO), and became the organization's first Director-General in 1946. [more to follow here] Huxley used the terms mentifacts, socifacts and artifacts to describe how cultural traits take on a life of their own, spanning over generations. This idea is related to memetics.

Huxley's internationalist and conservation interests also led him, with Victor Stolan, Sir Peter Scott, Max Nicholson and Guy Mountfort, to set up the WWF (World Wide Fund for Nature under its former name of the World Wildlife Fund) as an international fundraising group dedicated to the conservation of nature.

Another post-war activity was Huxley's attack on the Soviet politico-scientist Lysenko, who had espoused a Lamarkian heredity, made unscientific pronouncements on agriculture, used his influence to destroy classical genetics in Russia and to move genuine scientists from their posts.

In 1940, the leading botanical geneticist Vavilov was arrested, and Lysenko replaced him as director of the Institute of Genetics. In 1941, Vavilov was tried, found guilty of 'sabotage' and sentenced to death. Reprieved, he died in jail of malnutrition in 1943. Lysenko's machinations were the cause of his arrest. Worse still, Lysenkoism not only denied proven genetic facts, it stopped the artificial selection of crops on Darwinian principles. This may have contributed to the regular shortage of food from the Soviet agricultural system (Soviet famines). Huxley, who had twice visited the Soviet Union, was originally not anti-communist, but the ruthless adoption of Lysenkoism by Stalin ended his tolerant attitude. Lysenko ended his days in a Soviet mental hospital, and Vavilov's reputation was posthumously restored in 1955.

In the 1950s Huxley played a role in bringing to the English-speaking public the work of the French Jesuit-palaeontologist Pierre Teilhard de Chardin, whom he believed had been unfairly treated by the Catholic hierarchy. The Jesuits had forbidden publication of his ideas, but after his death his niece arranged for their publication. Huxley wrote the Forward to The Phenomenon of Man (1959) and was bitterly attacked by his rationalist friends.. Both men believed in evolution, but the fact that de Chardin was a deist whilst Huxley was an unbeliever meant that their interpretation of evolution was, at heart, fundamentally different.

On Huxley's death at 87 in 1975, John Owen (Director of National Parks for Tanganyika) said "Julian Huxley was one of the world's great men... he played a seminal role in wild life conservation in [East] Africa in the early days... [and in] the far-reaching influence he exerted [on] the international community."

In addition to his international and humanist concerns, his research interests covered evolution in all its aspects, ethology, embryology, genetics, anthropology and to some extent the infant field of cell biology. He was a friend and mentor of the biologist and Nobel laureate Konrad Lorenz, and taught and encouraged many others. In general, he was more of an all-round naturalist than his famous grandfather, and contributed much to the acceptance of natural selection. His outlook was international, and somewhat idealistic: he might have been shocked to see some of what transpired later.

Huxley was the most important biologist after August Weismann to insist on natural selection as the primary agent in evolution. He was a major player in the development of the theory of evolution for much of the twentieth century. Three aspects deserve special mention:

*In the early 20th century he was one of the minority of biologists who believed that natural selection was the main driving force of evolution, and that evolution occurred by small steps and not by saltation (jumps). These opinions are now standard.
Though his time as an academic was quite brief, he taught and encouraged a number of evolutionary biologists at the University of Oxford in the 1920s. Charles Elton (ecology), Alister Hardy (marine biology) and John Baker (cytology) all became highly successful, and Baker eventually wrote Huxley's Royal Society obituary memoir.
Perhaps the most significant was Edmund Brisco Ford, who founded a field of research called ecological genetics, which played a role in the evolutionary synthesis. Another important disciple was Gavin de Beer, who wrote on evolution and development, and became Director of the Natural History Museum. Both these fine scholars had attended his lectures on genetics, development and ethology, later became his collaborators, and then leaders in their own right.

*Huxley was one of the main architects of the new evolutionary synthesis which took place around the time of WWII. The synthesis of genetic and population ideas produced a consensus which reigned in biology from about 1940, and which is still broadly tenable.
His first 'trial run' was the treatment of evolution in the Science of Life, and in 1936 he published a long and significant paper for the British Association. In 1938 came three lengthy and significant reviews.
Two of these lengthy papers were on the subject of sexual selection, an idea of Darwin's whose standing has been revived in recent times. Huxley thought that sexual selection was "...merely an aspect of natural selection which... is concerned with characters which subserve mating, and are usually sex-limited." This rather grudging acceptance of sexual selection was influenced by his studies on the courtship of the Great Crested Grebe (and other birds that pair for life): the courtship takes place mostly after mate selection, not before. *Now it was time for Huxley to tackle the subject of evolution at full length, in what became the defining work of his life. His role was that of a synthesiser, and it helped that he had met many of the other participants. His book Evolution: the modern synthesis was written whilst he was Secretary to the Zoological Society, and made use of his remarkable collection of reprints covering the first part of the century. It was published in 1942. Reviews of the book in learned journals were little short of ecstatic; the American Naturalist called it "The outstanding evolutionary treatise of the decade, perhaps of the century. The approach is thoroughly scientific; the command of basic information amazing."
Huxley's main co-respondents in the modern evolutionary synthesis are usually listed as Ernst Mayr, Theodosius Dobzhansky, George Gaylord Simpson, Bernhard Rensch, Ledyard Stebbins and the population geneticists J.B.S. Haldane, Ronald Fisher and Sewall Wright. Certainly, for Huxley, E.B. Ford and his co-workers in ecological genetics were every bit as important; and Cyril Darlington, the chromosome expert, should also be noted.
It was Huxley who coined the terms the new synthesis and evolutionary synthesis ; he also invented the term cline in 1938 to describe species whose members fall into a series of sub-species with continuous change in characters over a geographical area. The classic example of a cline is the circle of subspecies of the gull Larus round the Arctic zone. This cline is an example of a ring species.
Some of Huxley's last contributions to the evolutionary synthesis were on the subject of ecological genetics.

*He always believed that on a broad view evolution led to advances in organisation. Progress without a goal was one of his phrases, to distinguish his point of view from classical Aristotelian teleology. The idea of evolutionary progress was subjected to some fierce criticism in the latter part of the twentieth century. Cladists, for example, were (and are) strongly against any suggestion that a group could be scientifically described as 'advanced' and others as 'primitive'. For them, and especially for the radical group of transformed cladists, there is no such thing as an advanced group, they are derived or apomorphic. Primitive groups are plesiomorphic. Ironically, it was Huxley who invented the terms clade and grades in 1957-9.
However, to take a rather extreme case, it would seem strange to say that when man is compared to bacteria, that mankind is not a vastly more complex and advanced form of life; or that the invasion of the land by plants and animals was not a great advance in the history of life on this planet. *Huxley argued his case many times, even in his most important works. Evolution in action (1953) discusses evolutionary progress at length: "Natural selection plus time produces biological improvement... 'Improvement' is not yet a recognised technical term in biology... however, living things are improved during evolution... Darwin was not afraid to use the word for the results of natural selection in general... I believe that improvement can become one of the key concepts in evolutionary biology." (p62)
"Can it be scientifically defined? Improvements in biological machinery... the limbs and teeth of grazing horses... the increase in brain-power... The eyes of a dragon-fly, which can see all round [it] in every direction, are an improvement over the mere microscopic eye-spots of early forms of life." (p63-64)
"[Over] the whole range of evolutionary time we see general advance — improvement in all the main properties of life, including its general organization. 'Advance' is thus a useful term for long-term improvement in some general property of life. [But] improvement is not universal. Lower forms manage to survive alongside higher". (p65) These excerpts are much abbreviated, but give some idea of his way of thinking. He addresses the topic of 'persistent types' (living fossils) later in the book (p126-8).
The objective description of complexity was one of the issues addressed by cybernetics in the 1950s. The idea that advanced machines (including living beings) could exert more control over their environments and operate in a wider range of situations perhaps serves as a basis for making the terms such as 'advanced' amenable to more exact definition. This is a debate that continues today.
For a modern survey of the idea of progress in evolution see Nitecki and Dawkins.

Huxley's humanism came from his appreciation that mankind was in charge of its own destiny (at least in principle), and this raised the need for a sense of direction and a system of ethics. His grandfather THH had, of course, faced the same problems and had created agnoticism. Julian's thinking went along these lines: "The critical point in the evolution of man... was when he acquired the use of [language]... Man's development is potentially open... He has developed a new method of evolution: the transmission of organized experience by way of tradition, which... largely overrides the automatic process of natural selection as the agent of change." Like agnosticism, humanism is a form of rational thought, and does not rely upon revelation or religious tradition. Unlike agnosticism, it is more directed to supplying a basis for ethics. Both Huxley and his grandfather gave Romanes Lectures on Evolution and Ethics. (see evolutionary ethics)

Huxley had a close association with the British rationalist and humanist movements. He was an Honorary Associate of the Rationalist Press Association from 1927 until his death, and on the formation of the British Humanist Association in 1963 became its first President, to be succeeded by AJ Ayer in 1965. He was also closely involved with the International Humanist and Ethical Union. Many of Huxley's books address humanist themes.

Huxley also presided over the founding Congress of the International Humanist and Ethical Union and served with John Dewey, Albert Einstein and Thomas Mann on the founding advisory board of the First Humanist Society of New York.

Huxley saw eugenics as important for removing undesirable variants from the human gene pool; but he believed race was a meaningless concept in biology, and its application to humans was highly inconsistent. Huxley was an outspoken critic both of the eugenic extremism that arose in the 1930s, and of the perceived wisdom that working classes were eugenically inferior.

In response to the rise of European fascism in the 1930s he was asked to write We Europeans with the ethnologist A.C. Haddon, zoologist Alexander Carr-Saunders and historian of science Charles Singer. Huxley suggested the word 'race' be replaced with ethnic group. After the Second World War he was instrumental in producing the UNESCO statement The Race Question, which asserted that "A race, from the biological standpoint, may therefore be defined as one of the group of populations constituting the species Homo sapiens" and "Now what has the scientist to say about the groups of mankind which may be recognized at the present time? Human races can be and have been differently classified by different anthropologists, but at the present time most anthropologists agree on classifying the greater part of present-day mankind into three major divisions, as follows: The Mongoloid Division; The Negroid Division; The Caucasoid Division." The UNESCO statement also helped destroy the idea that Jewish people form a distinct racial group when it asserted that "Catholics, Protestants, Moslems and Jews are not races..."

In the post war years, after the realisation that eugenic ideas had been used to excuse mass murder, Huxley (1957) coined the term "transhumanism" to describe the view that man should better himself through science and technology, possibly including eugenics, but also, importantly, the improvement of the social environment.

Huxley was always able to write well, and was ever willing to address the public on scientific topics. Well over half his books are addressed to a general audience, and he wrote often in periodicals and newspapers. The most extensive bibliography of Huxley lists some of these ephemeral articles, though there are others unrecorded.

These articles for a general audience, some reissued as Essays of a biologist (1923), probably led to the invitation from H.G. Wells to help write a comprehensive work on biology for a general readership, The Science of Life. This work was published as three volumes in 1929-30, and in one volume in 1931. Of this Robert Olby said "Book IV The essence of the controversies about evolution offers perhaps the clearest, most readable, succinct and informative popular account of the subject ever penned. It was here that he first expounded his his own version of what later developed into the evolutionary synthesis." In his memoirs, Huxley says that, all told, he made about £10,000 out of the book.

In 1934 Huxley collaborated with the naturalist Ronald Lockley to create for Alexander Korda the world's first natural history documentary The Private Life of the Gannet. For the film, shot with the support of the Royal Navy around Grassholm off the Pembrokeshire coast, they won an Oscar for best documentary.

Huxley had given talks on the radio since the 1920s, followed by written versions in The Listener. In later life, he became known to an even wider audience through television. In 1939 the BBC asked him to be a regular panelist on a Home Service general knowledge show, The Brains Trust, in which he and other panelists were asked to discuss questions submitted by listeners. The show was commissioned to keep up war time morale, by preventing the war from "disrupting the normal discussion of interesting ideas". Later, he was a regular panelist on one of the BBC's first quiz shows (1955) Animal, Vegetable, Mineral?, a version of Twenty Questions, the famous Quiz Show format which was first presented in the USA.

In his essay The Crowded World published in Evolutionary Humanism (1964), Huxley was openly critical of Communist and Catholic attitudes to birth control, population control and overpopulation. Based on variable rates of compound interest, Huxley predicted a probable world population of 6 billion by 2000. The United Nations Population Fund marked 12 October 1999 as 'The Day Of 6 Billion'''.

Huxley's use of language was highly skilled, and when no word seemed to suit he invented one. These are the most significant: *Clade (1957) *Cline (1938) *Grade (1959) *Ethnic group (1950: as opposed to race) *Morph (1942: as more correct and simpler than polymorph) *Ritualization (1914: formalised activities in bird behaviour) *Transhumanism (1957: the improvement of human beings)

Huxley always chose his titles carefully. He wrote about fifty books (depending on how you count them), and these themes are characteristic: *Religion without revelation (1927, 1957) *The new systematics (1940) *The uniqueness of man (1941) *Evolution: the modern synthesis (1942) *Evolutionary ethics (1943) *Evolution as a process (1954) *Essays of a humanist (1964) *The future of man. (1966)

* The individual in the animal kingdom (1911) * The courtship habits of the Great Crested Grebe (1914) [a landmark in ethology] * Essays of a Biologist (1923) * The stream of life (1926) * Animal biology (with J.B.S. Haldane, 1927) * Religion without revelation (1927, revised edition 1957) * The tissue-culture king (1927) [science fiction] * Ants (1929) * Bird-watching and bird behaviour (1930) * An introduction to science (with Edward Andrade, 1931-34) * What dare I think? (1931) * The science of life (with H.G. & G.P. Wells, 1931) * Africa view (1931) * The captive shrew and other poems (1932) * Problems of relative growth (1932) * A scientist among the Soviets (1932) * Scientific research and social needs (1934) * Elements of experimental embryology (with Gavin de Beer, 1934) * Thomas Huxley's diary of the voyage of HMS Rattlesnake (1935) * We Europeans (with A.C. Haddon, 1936) * Animal language (photographs by Ylla, includes recordings of animal calls: 1938, reprinted 1964) * The present standing of the theory of sexual selection. In Gavin de Beer (ed) Evolution: Essays on aspects of evolutionary biology (p11-42). Oxford: Clarendon Press (1938) * The living thoughts of Darwin (1939) * The new systematics. Oxford. (1940) [this multi-author volume, edited by Huxley, is one of the foundation stones of the 'New Synthesis', essays on taxonomy, evolution, natural selection, Mendelian genetics and population genetics * The uniqueness of man (1941) * Democracy marches (1941) * Evolution: the modern synthesis. Allen & Unwin, London. (1942, revised ed 1963) [this summarises research on all topics relevant to evolution up to the Second World War] * Evolutionary ethics (1943) * TVA: Adventure in planning (1944) * On living in a revolution (1944) * Evolution and ethics 1893-1943. Pilot, London. In USA as Touchstone for ethics Harper, N.Y. (1947) [includes text from both T.H. Huxley and Julian Huxley] * Man in the modern world (1947) eBook [essays selected from The uniqueness of man (1941) and On living in a revolution (1944) * Soviet genetics and World science: Lysenko and the meaning of heredity. Chatto & Windus, London. In USA as Heredity, East and West. Schuman, N.Y. (1949). * Evolution in action (1953) * Evolution as a process (with Hardy A.C. and Ford E.B. eds.) Allen & Unwin, London. (1954) * From an antique land: ancient and modern in the Middle East. Parrish, London (1954, revised 1966) * Kingdom of the beasts (with W. Suschitzky, 1956) * Biological aspects of cancer (1957) * New bottles for new wine Chatto & Windus, London; Harper N.Y. (1957); repr as Knowledge, morality, destiny. N.Y. (1960) * The coming new religion of humanism (1962) * The humanist frame (as editor, 1961) * Essays of a humanist (1964) reprinted 1966, 1969, 1992: ISBN 0-87975-778-7 * The human crisis (1964) * Darwin and his world (with Bernard Kettlewell, 1965) * Aldous Huxley 1894-1963: a memorial volume. (as editor, 1965) * The future of man: evolutionary aspects. (1966) * The wonderful world of evolution (1969) * Memories (2 vols 1970 & 1973) [his autobiography] * The Mitchell Beazley Atlas of World Wildlife. Mitchell Beazley, London; also published as The Atlas of World Wildlife. Purnell, Cape Town. (1973)

* Eliot Howard, Territory in bird life. Collins (1948 edition) - Foreword, with James Fisher

* Baker John R. 1978. Julian Huxley, scientist and world citizen, 1887-1975. UNESCO, Paris. * Clark, Ronald W. 1960. Sir Julian Huxley. Phoenix, London. * Clark, Ronald W. 1968. The Huxleys. Heinemann, London. * Dronamraju, Krishna R. 1993. If I am to be remembered: the life & work of Julian Huxley, with selected correspondence. World Scientific, Singapore. * Green, Jens-Peter 1981. Krise und Hoffnung, der Evolutionshumanismus Julian Huxleys. Carl Winter Universitatsverlag. * Huxley, Julian. 1970, 1973. Memories and Memories II. George Allen & Unwin, London. * Huxley, Juliette 1986. Leaves of the tulip tree. Murray, London [her autobiography includes much about Julian] * Keynes, Milo and Harrison, G. Ainsworth (eds) 1989. Evolutionary studies: a centenary celebration of the life of Julian Huxley. Proceeding of the 24th annual symposium of the Eugenics Society, London 1987. Macmillan, London. * Waters, C. Kenneth and Van Helden, Albert (eds) 1993. Julian Huxley: biologist and statesman of science. Rice University Press, Houston. [scholarly articles by historians of science on Huxley's work and ideas]

*Short biography. *Guide to Huxley's papers, 91 linear feet. *"Transhumanism" in New Bottles for New Wine. London: Chatto & Windus, 1957. *"The New Divination" in Essays of a Humanist. London: Chatto & Windus, 1964. * Fullerian Professorships