Complex sentence: He served as a Justice of the Wyoming Supreme Court for 42 years and by himself translated into English "Justinian's Code" and the "Novels", two parts of the "Corpus Juris Civilis".
Split into simpler sentences: He served as a Justice of the Wyoming Supreme Court for 42 years. Singlehandedly, he translated from Latin into English "Justinian's Code" and the "Novels", two parts of the "Corpus Juris Civilis".