94 VICTOR E. SHELFORD. 



7. Succession of all the animals of the forest communities 

 under consideration is comparable in principle to that in ponds. 

 Succession is due to an increment of changes in conditions pro- 

 duced by the plants and animals living at a given point. Animals 

 through their effect upon the soil play an important though 

 minor part in the process (pp. 73, 75). 



8. The various animal species are arranged in these com- 

 munities in an orderly fashion and the dominating animal mores 

 are correlated with the dominating, conditions (pp. 81, 89-90). 



9. Taxonomic (structural) species usually have distinct mores, 

 though the same species often has different mores under different 

 conditions, and different species may have the same mores. 

 Species and mores are therefore not synonymous (pp. 91-92). 



10. Ecology considers together mores that are alike or similar 

 in their larger characters (p. 92). 



HULL ZOOLOGICAL LABORATORY, 

 UNIVERSITY OF CHICAGO, 

 May i, 1912. 



VII. ACKNOWLEDGMENTS AND BIBLIOGRAPHY. 

 i. Acknowledgments. 



The writer is indebted to Mr. Geo. D. Fuller for data and 

 assistance in correlating the work on environmental analysis with 

 that on animal distribution and to Dr. H. C. Cowles for reading 

 the manuscript. He is also indebted to the following persons for 

 identifications and for advice concerning the groups in which they 

 are specialists: Mr. Frank C. Baker, Mollusca; Mr. Nathan Banks, 

 spiders; Mr. O. F. Cook, Myriopods; Mr. Wm. J. Gerhard, 

 Hemiptera; Dr. Joseph L. Hancock, Orthoptera; Mr. Chas. A. 

 Hart, general entomology; Mr. S. F. Hildebrand and Dr. S. E. 

 Meek, vertebrates; Professor H. F. Wickam and Mr. A. B. Wol- 

 cott, beetles. 



2. Special Bibliography. 



Literature on the species included in the lists and tables is 

 arranged in the order of first citation. It is not intended to be 

 complete but only to give a lead for finding more literature. 



