Complex sentence: This annual "Relation" was forwarded to the provincial of the order in France, and, after careful scrutiny and re-editing, published by him in a series of duodecimo volumes, known collectively as "The Jesuit Relations".
Split into simpler sentences: This annual "Relation" was forwarded to the provincial of the Order in France. After he reviewed and edited it, he published the account in a series of duodecimo volumes, known collectively as "The Jesuit Relations".