François Perrier
Encyclopedia
Francois Perrier 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...

 soldier
Soldier
A soldier is a member of the land component of national armed forces; whereas a soldier hired for service in a foreign army would be termed a mercenary...

 and geodesist
Geodesy
Geodesy , also named geodetics, a branch of earth sciences, is the scientific discipline that deals with the measurement and representation of the Earth, including its gravitational field, in a three-dimensional time-varying space. Geodesists also study geodynamical phenomena such as crustal...

.

Perrier was born at Valleraugue
Valleraugue
Valleraugue is a commune in the Gard department in southern France.-Geography:Valleraugue is located in a deep valley of the Cévennes mountains, on the Hérault River.-Population:-Personalities:Valleraugue was the birthplace of:...

 (Gard), , descended from a family of Protestants, of Cevennes
Cévennes
The Cévennes are a range of mountains in south-central France, covering parts of the départements of Gard, Lozère, Ardèche, and Haute-Loire.The word Cévennes comes from the Gaulish Cebenna, which was Latinized by Julius Caesar to Cevenna...

. After finishing his studies at the Lyceum of Nimes and at St. Barbe College, he was received at the Polytechnic School in 1853, and left it in 1857, as a staff officer.

He was promoted to lieutenant in 1857, captain in 1860, major of cavalry in 1874, lieutenant-colonel in 1879, and he received a year before his death the stars of brigadier-general. He was commander of the Légion d'honneur
Légion d'honneur
The Legion of Honour, or in full the National Order of the Legion of Honour is a French order established by Napoleon Bonaparte, First Consul of the Consulat which succeeded to the First Republic, on 19 May 1802...

 and president of the council-general of his department.

General Perrier long ago made a name for himself in science. After some remarkable publications upon the trigonometrical junction of France
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...

 and England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 (1861) and upon the triangulation and leveling of Corsica
Corsica
Corsica is an island in the Mediterranean Sea. It is located west of Italy, southeast of the French mainland, and north of the island of Sardinia....

 (1865), he was put at the head of the geodesic service of the French army in 1879. In 1880, the learned geodesist was sent as a delegate to the conference of Berlin for settling the boundaries of the new Greco-Turkish frontiers. In January of the same year, he was elected a member of the Académie des Sciences, as successor to Urbain Dortet de Tessan. He was a member of the Bureau des Longitudes
Bureau des Longitudes
The Bureau des Longitudes is a French scientific institution, founded by decree of 25 June 1795 and charged with the improvement of nautical navigation, standardisation of time-keeping, geodesy and astronomical observation. During the 19th century, it was responsible for synchronizing clocks...

 from 1875.

In 1882, Perrier was sent to Florida
Florida
Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

 to observe the transit of Venus
Transit of Venus
A transit of Venus across the Sun takes place when the planet Venus passes directly between the Sun and Earth, becoming visible against the solar disk. During a transit, Venus can be seen from Earth as a small black disk moving across the face of the Sun...

, where his observations were a reported to be complete success. Thenceforward, his celebrity continued to increase until his last triangulating operations in Algeria
Algeria
Algeria , officially the People's Democratic Republic of Algeria , also formally referred to as the Democratic and Popular Republic of Algeria, is a country in the Maghreb region of Northwest Africa with Algiers as its capital.In terms of land area, it is the largest country in Africa and the Arab...

.

General Perrier merits led to him being appointed head of the geographical service of the army, to the organization of which he devoted his entire energy.

General Perrier died at Montpellier
Montpellier
-Neighbourhoods:Since 2001, Montpellier has been divided into seven official neighbourhoods, themselves divided into sub-neighbourhoods. Each of them possesses a neighbourhood council....

 on the 20th of February, 1888. His name is one of the 72 names inscribed on the Eiffel Tower.
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