An Enquiry Into the Origin and Intimate Nature of MalariaNote 39 — Chapter VIII · EARTH, AIR, AND WATER IN RELATION TO MAN—HOW MODIFIED BY HIM—RESULTS OF THAT MODIFICATION—ACTION AND REACTION.Reading editionLiebig.◇Copy noteReturn to CHAPTER VIII. EARTH, AIR, AND WATER IN RELATION TO MAN—HOW MODIFIED BY HIM—RESULTS OF THAT MODIFICATION—ACTION AND REACTION.