The Cambridge natural history, Vol. 03 (of 10)Note 327 — Chapter VIII · THE DIGESTIVE ORGANS, JAW, AND RADULA: EXCRETORY ORGANSReading editionSemon, Biol. Centralbl. ix. p. 80.◇Copy noteReturn to CHAPTER VIII THE DIGESTIVE ORGANS, JAW, AND RADULA: EXCRETORY ORGANS