THE THEORY OF LAMARCK 41 



versy upon these subjects which followed the estab- 

 lishment of the principle of natural selection. 



BIBLIOGRAPHY* 



WHETHAM, W. C. D. : The Recent Development of Physical 

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SPENCER, HERBERT : Essays Scientific, Political, and Specu- 

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HUXLEY, T. H. : Collected Essays, vol. ii., 1899. 



ROMANES, G. J. : Darwin and After Darwin, vol. i., 1897. 



LAMARCK, J. B. : Philosophic Zoologique, 1809. 



LYELL, SIR CHARLES, Principles of Geology, eleventh edition, 

 1872. 



BUTLER, S. : Evolution Old and New, 1879. 



