Jacques-Marie Le Père


Jacques-Marie Le Père was a French civil engineer.

Life

He accompanied the French Campaign in Egypt and Syria, was director of 'Ponts et Chaussées' in Egypt. After accompanying the expedition to the remains of the Canal of the Pharaohs, built by Necho II between the River Nile and Suez Gulf and improved by Ptolemy II, he was commissioned by Bonaparte to edit an account of the Canal. He was made a member of the Institut d'Égypte on 22 August 1798, in the mathematics section.
With his brother Gratien and other engineers working alongside them, he carried out three building programmes to measure the levels of the isthmus, in difficult conditions due to Bedouin attacks and the lack of water. In the rain, he concluded that there was a 9 m difference between the levels of the Mediterranean and Red Sea, an error which persisted until the measurements carried out by Paul-Adrien Bourdaloue in 1847.
After his return to France, he spent a long time as divisional inspector of 'ponts et chaussées' in Paris, then as inspector of Paris from 1822 to 1830.

Works