Complex sentence: After a short stay with his father in Montevideo, Ducasse settled down in Paris at the end of 1867, studied at the "École Polytechnique", only to give it up one year later.
Split into simpler sentences: After a short stay with his father in Montevideo, Ducasse settled down in Paris at the end of 1867. He began studies at the "École Polytechnique", only to give them up one year later.