• The explanation of material changes given by Greek Thinkers
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• A sketch of alchemical theory
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• The alchemical notion of the unity and simplicity of nature
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• The alchemical elements and principles
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• The alchemical essence
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• Alchemy as an experimental art
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• The Language of alchemy
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• The Degeneracy of Alchemy
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• Paracelsus and some other alchemists
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• Summary of the alchemical doctrine -- the replacement of the Three Principles of the alchemists by the single principle of Phlogiston
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• The examination of the phenomena of combustion
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• The recognition of chemical changes as the interactions of definite substances
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• The chemical elements contrasted with the alchemical principles
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• The modern form of the alchemical quest of the One Thing
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