Acknowledgements 



I thank their respective pubhshers for permission to reproduce 

 the following articles: Old Age and Natural Death: Modern 

 Quarterly^ vol. 1 (1946), p. 30. An Unsolved Problem of Biology: 

 H. K. Lewis, London, 1952. A Note on 'The Scientific Method^ 

 Nineteenth Century (1949), p. 115. A Commentary on Lamarck- 

 ism: Bull. Nat. Inst. Sci. India, vol. 7 (1953), p. 127. The 

 Pattern of Organic Growth and Transformation: The Times 

 Science Review.^ no. 12 (1954), p. 10. The Imperfections of 

 Man: Twentieth Century (1955), p. 236. 



