4. ‘ The Advancement of Science.’ Being the collected Presidential 
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The Scientific World-Picture of 
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Growth in Opportunities for Edu- 
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Michael Faraday and the Theory 
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Problems of Geology contempo- 
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A Hundred Years of Evolution. 
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Power. 
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The Biological Nature of Filtrable 
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The Nature of Mind. 
The Advancement of Botany. 
Educational Development, 1831 
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The Changing Outlook in Agri- 
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Gen. the Rt. Hon. J. C. Smuts. 
Sir J. J. Thomson. 
Sir Harold Hartley. 
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Prof. E. B. Poulton. 
The Rt. Hon. Sir Halford 
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Sir Alfred Ewing. 
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Sir C. Grant Robertson. 
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ton, Prof. R. A. Millikan, Rt. Rev. the Lord Bishop of Birmingham, 
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