The first-ever affinity table, which was based on displacement reactions, was published in 1718 by the French chemist Étienne François Geoffroy.

* Étienne François Geoffroy — Geoffroy's 1718 Affinity Table

Haeckel advanced a version of the earlier " recapitulation theory ", previously set out by Étienne Serres in the 1820s and supported by followers of Geoffroy including Robert Edmond Grant, which proposed a link between ontogeny ( development of form ) and phylogeny ( evolutionary descent ), summed up by Haeckel in the phrase " ontogeny recapitulates phylogeny ".

* 1672 – Étienne François Geoffroy, French chemist ( d. 1731 )

It was supported by Étienne Geoffroy Saint-Hilaire and became a prominent part of his ideas which suggested that past transformations of life could have had environmental causes working on the embryo, rather than on the adult as in Lamarckism.

When Hutchinson claimed all materials were property of the British Crown, a French scholar, Étienne Geoffroy Saint-Hilaire, said to Clarke and Hamilton that they would rather burn all their discoveries — referring ominously to the destruction of the Library of Alexandria — than turn them over.

* January 6 – Étienne François Geoffroy, French chemist ( b. 1672 )

* February 13 – Étienne François Geoffroy, French chemist ( d. 1731 )

It was supported by Étienne Geoffroy Saint-Hilaire as part of his ideas of idealism, and became a prominent part of his version of Lamarckism leading to disagreements with Georges Cuvier.

During this period, too, she also met and became friends with the father and son comparative anatomists and zoologists Étienne Geoffroy Saint-Hilaire and Isidore Geoffroy Saint-Hilaire by whom her father was employed to create natural history illustrations.

Étienne Geoffroy Saint-Hilaire coined the term in 1836.

Lamarck founded a school of French Transformationism which included Étienne Geoffroy Saint-Hilaire, and which corresponded with a radical British school of anatomy based in the extramural anatomy schools in Edinburgh which included the surgeon Robert Knox and the comparative anatomist Robert Edmund Grant.

Fourcroy's 1785 publication, Entomologia Parisiensis, sive, Catalogus insectorum quae in agro Parisiensi reperiuntur ..., co-written with Étienne Louis Geoffroy, was a major contribution to systematic entomology.

In 1798, Étienne Geoffroy Saint-Hilaire ( 1772 – 1844 ) made a colour plate of the offspring of a lion and a tiger.

Colour plate of the offspring of a lion and tiger, Étienne Geoffroy Saint-Hilaire

In 1798, Étienne Geoffroy Saint-Hilaire noted on vestigial structures:

Scientific research was continued by Étienne Geoffroy Saint-Hilaire ( 1772 – 1844 ) and Paul Broca ( 1824 – 1880 ), founder of the Anthropological Society in France in 1859.

He was born in Paris, the son of Étienne Geoffroy Saint-Hilaire.

* La Vie d ' Étienne Geoffroy Saint-Hilaire ( 1847 ) ;

* Étienne Geoffroy Saint Hillaire Collection, American Philosophical Society

ca: Étienne Geoffroy Saint-Hilaire

de: Étienne Geoffroy Saint-Hilaire

et: Étienne de Geoffroy Saint-Hilaire

es: Étienne Geoffroy Saint-Hilaire

eo: Étienne Geoffroy Saint-Hilaire

fr: Étienne Geoffroy Saint-Hilaire

gl: Étienne Geoffroy Saint-Hilaire

id: Étienne Geoffroy Saint-Hilaire

nl: Étienne Geoffroy Saint-Hilaire

no: Étienne Geoffroy Saint-Hilaire

oc: Étienne Geoffroy Saint-Hilaire

Ernest Reyer, the adopted name of Louis Étienne Ernest Rey, was a French opera composer and music critic ( December 1, 1823 – January 15, 1909 ).

Pierre Étienne Théodore Rousseau ( April 15, 1812 – December 22, 1867 ), French painter of the Barbizon school.

Jules Étienne Pasdeloup ( 15 September 1819 in Paris – 14 August 1887 in Fontainebleau ) was a French conductor.

* April 17 – Étienne Maurice Gérard, Marshal of France and Prime Minister of France ( b. 1773 )

* April 4 – Étienne Maurice Gérard, Marshal of France and Prime Minister of France ( d. 1852 )

* April 9 – Étienne Aignan, French writer, librettist, and playwright ( d. 1824 )

Jean Étienne Vachier, called Championnet ( 13 April 1762, Alixan, Drôme-9 January 1800 ), French general, enlisted in the army at an early age and served in the Great Siege of Gibraltar.

Étienne Aignan ( 9 April 1773 – 21 June 1824 ) was a French translator, political writer, librettist and playwright born in Beaugency, Loiret.

Pierre Étienne Flandin (; 12 April 1889 at Paris, France – 13 June 1958 at Saint-Jean-Cap-Ferrat, France ) was a French conservative politician of the Third Republic, leader of the Democratic Republican Alliance ( ARD ), and Prime Minister of France from 8 November 1934 to 31 May 1935.

Étienne Maurice Gérard, comte Gérard ( 4 April 177317 April 1852 ) was a French general and statesman.

Jules Étienne Joseph Quicherat ( 13 October 1814 – 8 April 1882 ) was a French historian and archaeologist.

* 21 March 1798 – 20 April 1798: Étienne Mollevaut

Negotiations were proposed in late March, and on April 2 a new Prime Minister, Étienne Tshisekedi — a longtime rival of Mobutu — was installed.

François-Benoît Hoffman ( 11 July 1760 – 25 April 1828 ) was a French playwright and critic, best known today for his operatic librettos, including those set to music by Étienne Méhul and Luigi Cherubini ( most notably Cherubini's Médée, 1797 ).

Étienne Léopold Trouvelot ( December 26, 1827 – April 22, 1895 ) was a French artist, astronomer and amateur entomologist.

Étienne Bobillier ( April 17, 1798 – March 22, 1840 ) was a French mathematician.

He lived to see the election of Louis-Napoleon as president of the Second Republic, and died in April 1850 ; with the exception of Étienne Denis Pasquier, he was the last surviving minister of Napoleon Bonaparte.