Lab's White Walls Chapter №: Album №: Release date: Last Chapter: Next Chapter: Anime adaptation: Lab's White Walls ( 白亜の研究所 / はくあのけんきゅうじょ / hakua no kenkyuujo / Insitute of Chalk, or Chalky Laboratory ) is the fifty-eighth chapter of the Elfen Lied manga series. A story arc digest of chapters fifty-eight through sixty-two is also available.