Complex sentence: Elbert Hubbard and the writer sat at the small table in the The Pennsylvania Society rehearsing mutual old time experiences in the west, particularly, tales relating, and had himself been adopted into the Sioux tribe, but recently.
Split into simpler sentences: Elbert Hubbard and the writer sat at the small table in the The Pennsylvania Society rehashing mutual old time experiences in the west, particularly, relating tales. He had himself been adopted into the Sioux tribe, but recently.