Étienne Geoffroy Saint-Hilaire
Encyclopedia
Étienne Geoffroy Saint-Hilaire (15 April 1772 – 19 June 1844) was a French
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...
naturalist
Natural history
Natural history is the scientific research of plants or animals, leaning more towards observational rather than experimental methods of study, and encompasses more research published in magazines than in academic journals. Grouped among the natural sciences, natural history is the systematic study...
who established the principle of "unity of composition". He was a colleague of Jean-Baptiste Lamarck
Jean-Baptiste Lamarck
Jean-Baptiste Pierre Antoine de Monet, Chevalier de la Marck , often known simply as Lamarck, was a French naturalist...
and expanded and defended Lamarck's evolutionary theories. Geoffroy's scientific views had a transcendental flavor (unlike Lamarck's materialistic views) and were similar to those of German morphologists like Lorenz Oken
Lorenz Oken
Lorenz Oken was a German naturalist.Oken was born Lorenz Okenfuss in Bohlsbach in Baden and studied natural history and medicine at the universities of Freiburg and Würzburg. He went on to the University of Göttingen, where he became a Privatdozent , and shortened his name to Oken...
. He believed in the underlying unity of organismal design, and the possibility of the transmutation of species in time, amassing evidence for his claims through research in comparative anatomy, paleontology, and embryology.
Life and early career
Geoffroy was born at ÉtampesÉtampes
Étampes is a commune in the metropolitan area of Paris, France. It is located south-southwest from the center of Paris . Étampes is a sub-prefecture of the Essonne department....
, Essonne
Essonne
Essonne is a French department in the region of Île-de-France. It is named after the Essonne River.It was formed on 1 January 1968 when Seine-et-Oise was split into smaller departments.- History :...
, and studied at the Collège de Navarre
Collège de Navarre
The College of Navarre was one of the colleges of the historic University of Paris, rivaling the Sorbonne and renowned for its library. It was founded by Queen Joan I of Navarre in 1305, who provided for three departments, the arts with 20 students, philosophy with 30 and theology with 20...
, in Paris, where he studied natural philosophy under M. J. Brisson
Mathurin Jacques Brisson
Mathurin Jacques Brisson was a French zoologist and natural philosopher.Brisson was born at Fontenay-le-Comte. The earlier part of his life was spent in the pursuit of natural history, his published works in this department including Le Règne animal and Ornithologie...
. He then attended the lectures of Daubenton at the College de France and Fourcroy
Antoine François, comte de Fourcroy
Antoine François, comte de Fourcroy was a French chemist and a contemporary of Antoine Lavoisier. Fourcroy collaborated with Lavoisier, Guyton de Morveau, and Claude Berthollet on the Méthode de nomenclature chimique, a work that helped standardize chemical nomenclature.-Life and work:Fourcroy...
at the Jardin des Plantes
Jardin des Plantes
The Jardin des Plantes is the main botanical garden in France. It is one of seven departments of the Muséum national d'histoire naturelle. It is situated in the 5ème arrondissement, Paris, on the left bank of the river Seine and covers 28 hectares .- Garden plan :The grounds of the Jardin des...
. In March 1793 Louis-Jean-Marie Daubenton
Louis-Jean-Marie Daubenton
Louis-Jean-Marie Daubenton was a French naturalist.Daubenton was born at Montbard . His father, Jean Daubenton, a notary, intended him for the church, and sent him to Paris to study theology, but Louis-Jean-Marie was more interested in medicine...
, through the interest of Bernardin de Saint-Pierre
Jacques-Henri Bernardin de Saint-Pierre
Jacques-Henri Bernardin de Saint-Pierre was a French writer and botanist...
, procured him the office of sub-keeper and assistant demonstrator of the cabinet of natural history, made vacant by the resignation of Bernard Germain Étienne de la Ville, Comte de Lacépède. By a law passed in June 1793, Geoffroy was appointed one of the twelve professors of the newly constituted Muséum National d'Histoire Naturelle
Muséum national d'histoire naturelle
The Muséum national d'Histoire naturelle is the National Museum of Natural History in Paris, France.- History :The museum was formally founded on 10 June 1793, during the French Revolution...
, being assigned the chair of zoology
Zoology
Zoology |zoölogy]]), is the branch of biology that relates to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct...
. In the same year he busied himself with the formation of a menagerie at that institution.
In 1794, Geoffroy entered into correspondence with Georges Cuvier
Georges Cuvier
Georges Chrétien Léopold Dagobert Cuvier or Jean Léopold Nicolas Frédéric Cuvier , known as Georges Cuvier, was a French naturalist and zoologist...
. Shortly after the appointment of Cuvier as assistant at the Museum d'Histoire Naturelle, Geoffroy received him into his house. The two friends wrote together five memoirs on natural history, one of which, on the classification of mammals, puts forward the idea of the subordination of characters upon which Cuvier based his zoological system. It was in a paper entitled Histoire des Makis, ou singes de Madagascar
Madagascar
The Republic of Madagascar is an island country located in the Indian Ocean off the southeastern coast of Africa...
, written in 1795, that Geoffroy first gave expression to his views on the unity of organic composition, the influence of which is perceptible in all his subsequent writings; nature, he observes, presents us with only one plan of construction, the same in principle, but varied in its accessory parts.
In 1798, Geoffroy was chosen a member of Napoleon's great scientific expedition to Egypt
Egypt
Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...
as part of the natural history and physics section of the Institut d'Égypte
Institut d'Égypte
The Institut d’Égypte was a learned academy formed by Napoleon Bonaparte to carry out research during his Egyptian campaign.-Early work:It first met on 24 August 1798, with Gaspard Monge as president, Bonaparte himself as vice-president and Joseph Fourier and Costaz as secretaries...
; 167 scientists and artists participated in the expedition, including Dominique-Vivant Denon, Claude Louis Berthollet
Claude Louis Berthollet
Claude Louis Berthollet was a Savoyard-French chemist who became vice president of the French Senate in 1804.-Biography:...
, and Jean Baptiste Joseph Fourier. On the capitulation of Alexandria
Alexandria
Alexandria is the second-largest city of Egypt, with a population of 4.1 million, extending about along the coast of the Mediterranean Sea in the north central part of the country; it is also the largest city lying directly on the Mediterranean coast. It is Egypt's largest seaport, serving...
in August 1801, he took part in resisting the claim made by the British general to the collections of the expedition, declaring that, were that demand persisted in, history would have to record that he also had burnt a library in Alexandria
Alexandria
Alexandria is the second-largest city of Egypt, with a population of 4.1 million, extending about along the coast of the Mediterranean Sea in the north central part of the country; it is also the largest city lying directly on the Mediterranean coast. It is Egypt's largest seaport, serving...
. Early in January 1802 Geoffroy returned to Paris. He was elected a member of the French Academy of Sciences
French Academy of Sciences
The French Academy of Sciences is a learned society, founded in 1666 by Louis XIV at the suggestion of Jean-Baptiste Colbert, to encourage and protect the spirit of French scientific research...
in September 1807. In March of the following year Napoleon
Napoleon I of France
Napoleon Bonaparte was a French military and political leader during the latter stages of the French Revolution.As Napoleon I, he was Emperor of the French from 1804 to 1815...
, who had already recognized his national services by the award of the cross of the legion of honor, selected him to visit the museums of Portugal
Portugal
Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...
, for the purpose of procuring collections from them, and in the face of considerable opposition from the British he eventually was successful in retaining them as a permanent possession for his country.
Later career
In 1809, the year after his return to France, Geoffroy was made professor of zoology at the faculty of sciences at Paris, and from that period he devoted himself more exclusively than before to anatomical study. In 1818 he published the first part of his celebrated Philosophie anatomique, the second volume of which, published in 1822, and subsequent memoirs account for the formation of monstrosities on the principle of arrest of development, and of the attraction of similar parts.
1820s
The 1820s decade ran from January 1, 1820, to December 31, 1829.- East Asia :* February 14, 1820 – Minh Mang starts to rule in Vietnam.* Java War * 1828 Siamese-Lao War: Siam invades and sacks Vientiane....
in Edinburgh
Edinburgh
Edinburgh is the capital city of Scotland, the second largest city in Scotland, and the eighth most populous in the United Kingdom. The City of Edinburgh Council governs one of Scotland's 32 local government council areas. The council area includes urban Edinburgh and a rural area...
(assisted in 1826 and 1827 by his student Charles Darwin
Charles Darwin
Charles Robert Darwin FRS was an English naturalist. He established that all species of life have descended over time from common ancestry, and proposed the scientific theory that this branching pattern of evolution resulted from a process that he called natural selection.He published his theory...
) when Grant successfully identified the pancreas
Pancreas
The pancreas is a gland organ in the digestive and endocrine system of vertebrates. It is both an endocrine gland producing several important hormones, including insulin, glucagon, and somatostatin, as well as a digestive organ, secreting pancreatic juice containing digestive enzymes that assist...
in molluscs. When, in 1830, Geoffroy proceeded to apply to the invertebrata his views as to the unity of animal composition, he found a vigorous opponent in Cuvier, his former friend.
Geoffroy, a synthesiser, contended, in accordance with his theory of unity of plan in organic composition, that all animals are formed of the same elements, in the same number; and with the same connections: homologous parts, however they differ in form and size, must remain associated in the same invariable order. With Johann Wolfgang von Goethe
Johann Wolfgang von Goethe
Johann Wolfgang von Goethe was a German writer, pictorial artist, biologist, theoretical physicist, and polymath. He is considered the supreme genius of modern German literature. His works span the fields of poetry, drama, prose, philosophy, and science. His Faust has been called the greatest long...
he held that there is in nature a law of compensation or balancing of growth, so that if one organ take on an excess of development, it is at the expense of some other part; and he maintained that, since nature takes no sudden leaps, even organs which are superfluous in any given species, if they have played an important part in other species of the same family, are retained as rudiments, which testify to the permanence of the general plan of creation. It was his conviction that, owing to the conditions of life, the same forms had not been perpetuated since the origin of all things, although it was not his belief that existing species are becoming modified.
Cuvier, who was an analytical observer of facts, admitted only the prevalence of laws of co-existence or harmony in animal organs, and maintained the absolute invariability of species, which he declared had been created with a regard to the circumstances in which they were placed, each organ contrived with a view to the function it had to fulfil, thus putting, in Geoffroy's considerations, the effect for the cause.
In 1836 he coined the term phocomelia
Phocomelia
Phocomelia is an extremely rare congenital disorder involving the limbs . Étienne Geoffroy Saint-Hilaire coined the term in 1836....
.
In July 1840, Geoffroy became blind, and some months later he had a paralytic attack. From that time his strength gradually failed him. He resigned his chair at the museum in 1841, and was succeeded by his son, Isidore Geoffroy Saint-Hilaire
Isidore Geoffroy Saint-Hilaire
Isidore Geoffroy Saint-Hilaire was a French zoologist and an authority on deviation from normal structure. He coined the term ethology.He was born in Paris, the son of Étienne Geoffroy Saint-Hilaire...
. He died in 1844.
Geoffroy's theory
Geoffroy was a deist, which is to say that he believed in a God, but also in a law-like universe, with no supernatural interference in the details of existence. This kind of opinion was common in the EnlightenmentAge of Enlightenment
The Age of Enlightenment was an elite cultural movement of intellectuals in 18th century Europe that sought to mobilize the power of reason in order to reform society and advance knowledge. It promoted intellectual interchange and opposed intolerance and abuses in church and state...
, and goes with a rejection of revelation
Revelation
In religion and theology, revelation is the revealing or disclosing, through active or passive communication with a supernatural or a divine entity...
and miracles, and does not interpret the Bible
Bible
The Bible refers to any one of the collections of the primary religious texts of Judaism and Christianity. There is no common version of the Bible, as the individual books , their contents and their order vary among denominations...
as the literal word of God. These views did not conflict with his naturalistic ideas about organic change.
Geoffroy's theory was not a theory of common descent, but a working-out of existing potential in a given type. For him, the environment causes a direct induction of organic change. This opinion Ernst Mayr
Ernst Mayr
Ernst Walter Mayr was one of the 20th century's leading evolutionary biologists. He was also a renowned taxonomist, tropical explorer, ornithologist, historian of science, and naturalist...
labels as 'Geoffroyism'. It is definitely not what Lamarck believed (for Lamarck, a change in habits is what changes the animal). The direct effect of environment is not believed today by any main-stream evolutionist; even Lawrence
Sir William Lawrence, 1st Baronet
Sir William Lawrence, 1st Baronet FRCS FRS was an English surgeon who became President of the Royal College of Surgeons of London and Serjeant Surgeon to the Queen....
knew by 1816 that the climate does not directly cause the differences between human races.
Legacy
The scientist lent his name to the Geoffroy's CatGeoffroy's Cat
Geoffroy's Cat is a wild cat in the southern and central regions of South America. It is about the size of a domestic cat. While the species is relatively common in many areas, it is considered to be "Near Threatened" by IUCN because of concern over land-use changes in the regions where it lives...
(Leopardus geoffroyi), the most - and least protected - wild cat
Cat
The cat , also known as the domestic cat or housecat to distinguish it from other felids and felines, is a small, usually furry, domesticated, carnivorous mammal that is valued by humans for its companionship and for its ability to hunt vermin and household pests...
in South America
South America
South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...
. Following his travels to South America in the early 19th century, he studied the cat while a professor of zoology in Paris, and identified five subspecies, based on geographic dispersement.
External links
- Étienne Geoffroy Saint Hillaire Collection, American Philosophical Society
- van den Biggelaar J. A. M., Edsinger-Gonzales E. & Schram F. R. (2002). "The improbability of dorso-ventral axis inversion during animal evolution, as presumed by Geoffroy Saint Hilaire". Contributions to ZoologyContributions to ZoologyContributions to Zoology is a scientific journal that started in 1848 as a publication of the Committee in charge of the library of the Dutch Royal Zoological Society "Natura Artis Magistra" and became integrated in the library of the University of Amsterdam in 1939...
71(1/3). HTM