APPENDIX IV. 

 LIST OF PAPERS ON EVOLUTION BY JOHN T. GULICK. 



An article published in Nature, July i8, 1872, entitled: — 



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

 by the Achatinellince. 



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

 XX, xxiir, 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 1 891 ; a small portion of the same is also given in Appendix 

 I of this volume. 



Intensive Segregation, in 1 889 ; reproduced in Appendix II of this volume. 



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

 and December, 1890, as follows: 



Divergent Evolution and the Darwinian Theory. 



The Inconsistencies of Utilitarianism as the exclusive Theory of 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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