Coral Reefs; Volcanic Islands; South American Geology — CompleteNote 21 — Chapter VI · ON THE DISTRIBUTION OF CORAL-REEFS WITH REFERENCE TO THE THEORY OF THEIR FORMATIONReading editionPartie Zoolog., “Voyage de la Coquille.”◇Copy noteReturn to Chapter VI ON THE DISTRIBUTION OF CORAL-REEFS WITH REFERENCE TO THE THEORY OF THEIR FORMATION