Coral Reefs; Volcanic Islands; South American Geology — CompleteNote 20 — Chapter VI · ON THE DISTRIBUTION OF CORAL-REEFS WITH REFERENCE TO THE THEORY OF THEIR FORMATIONReading editionLutké’s “Voyage,” vol. ii, p. 304.◇Copy noteReturn to Chapter VI ON THE DISTRIBUTION OF CORAL-REEFS WITH REFERENCE TO THE THEORY OF THEIR FORMATION