APPENDIX IV. 



LIST OF PAPERS ON EVOLUTION BY JOHN T. GUL1CK. 



An article published in Nature, July 18, 1872, entitled: 



The Variation of Species as related to their Geographical Distribution, illustrated 

 by the Achatinellinae. 



Three papers published in the Linnean Society's Journal, Zoology, vols. xi, 

 xx, xxin, as follows : 



Diversity of Evolution under One Set of External Conditions, in 1872. 



Divergent Evolution through Cumulative Segregation, in 1887; reproduced in the 

 Smithsonian Report for 1 89 1 ; a small portion of the same is also given in Appendix 

 I of this volume. 



Intensive Segregation, in 1889; reproduced in Appendix II of this volume. 



Three articles published in the American Journal of Science for January, July, 

 and December, 1 890, as follows : 



Divergent Evolution and the Darwinian Theory. 



Tlie Inconsistencies of Utilitarianism as the exclusive Theory oj Evolution. 



The Preservation and Accumulation of Cross-Infertility. 



Four letters published in Nature, and reproduced in Appendix III of this 

 volume. 



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