Complex sentence: He retired from the British Museum in 1924, and lived on until 1934, continuing to publish book after book up until the completion of his last work, "From Fetish to God in Ancient Egypt" (1934).
Split into simpler sentences: He retired from the British Museum in 1924, and lived on until 1934, continuing to publish book after book. His last work was "From Fetish to God in Ancient Egypt" (1934).