Jean-Baptiste Lislet Geoffroy


Jean-Baptiste Lislet Geoffroy was a French astronomer, botanist and cartographer.

Early life

Lislet Geoffroy was born on August 23, 1755 in Saint-Pierre, Réunion and died on February 8, 1836 in Port-Louis. Lislet was the son of Jean-Baptiste Geoffroy a white, French engineer working in Mauritius and a freed black slave from Guinea. Lislet's father had freed his mother in order to take her as his mistress, but because Lislet was illegitimate, he took the name of the place of his birth for his last name. When he was 38 years old, his father legitimatized him, and he took the last name Lislet-Geoffroy. His father was reputed to have been born in Paris and be of Breton ethnicity. Lislet Geoffroy stated that his mother was named Niama and was the daughter of Toucu Niamba, King of Galam in modern day Senegal.Outside of geography, he worked in geology, showing that the shoal, Isle Plate around Mauritius was formed by the debris of the crater of a volcano.
He was the uncle of abolitionist novelist Louis Timagène Houat. He married and had two children. His wife died in 1804.

Career

At age 15, he entered the engineer corps and moved to Mauritius where he worked and studied astronomy and mathematics under Bernard Boudin de Tromelin, known as le Chevalier de Tromelin. When the Anglo-French War began, Lislet-Geoffroy was made assistant pilot, serving with de Tromelin. In 1880, he became draughtsman to the engineers of the Isle de France, then the name of Mauritius.
In 1788, he was appointed to map Mauritius, and his success in the project earned him commission as Geographical Engineer. Avoiding the reign of terror, he was commissioned in 1794 to visit and chart the Seychelles, and his success there earned him the promotion to assistant-officer in the body of military engineers. When Captain-General Charles Mathieu Isidore Decaen took charge of Mauritius in 1803, Lislet Geoffroy was promoted to captain, and when Isle de France was captured, Lislet Geoffroy became chief of the commission for the inspection of the island.

French Academy of Sciences

In 1786, he was elected to the French Academy of Sciences. The academy was dissolved during the French Revolution, and Lilset Geoffroy was not among those reinstated when it reformed in 1793, possibly because of the distance between himself in the colonies and Paris, but possibly for prejudicial reasons. Unable to return to France, he founded the Société des Sciences et Arts de l'Ile de France on October 9, 1801. Cofounders of the group were Jacques Milbert, Jean-Baptiste Dumont, Jacques Delisse, and Jean-Baptiste Bory de St. Vincent. Until 1934, he was the only man of color to have been a member of the academy.
Among the many works of Lislet-Geoffroy were a map of the Isles of France and Reunion published first in 1797 and second in a corrected version in 1802. He also published a chart of the Seychelles and a map of Madagascar. He made a voyage to Madagascar in 1787, and his account of the voyage was published in Malte-Bruns Annales de Voyages. Outside of geography, he worked in geology, showing that the shoal, Isle Plate around Mauritius was formed by the debris of the crater of a volcano. He also took detailed measurement of the climate of Mauritius for almost 50 years ending in 1834.
Lislet Geofroy died February 8, 1836.

Writings