Complex sentence: Louis Rendu (December 9,1789-August 28,1859) was French Roman Catholic bishop of Annecy and a scientist, author of "Theorie des glaciers de la Savoie", an important book on the mechanisms of glacial motion.
Split into simpler sentences: Louis Rendu (December 9,1789-August 28,1859) was French Roman Catholic bishop of Annecy and a scientist. He was the author of "Theorie des glaciers de la Savoie", an important book on the mechanisms of glacial motion.