Complex sentence: Although he continued to place pieces in the magazine, they bore no signature until August 1834, when "The Boarding House" appeared in "The Morning Chronicle" using the strange pen-name "Boz".
Split into simpler sentences: Although he continued to place pieces in the magazine, they bore no signature. That is until August 1834, when "The Boarding House" appeared in "The Morning Chronicle" using the strange pen-name "Boz".