some of the larger indices were compiled, and it is essential that the 

 student be forced to go through all the indices year by year. If the 

 indices are not found in the smaller towns and cities, the bibliography 

 can be made during one of the vacations when the student passes 

 through some of the larger cities where there is a medical or scientific 

 library. 



The more important indices published in the English Language are: 



The Zoological Record (published yearly by the Zoological Society of London. 

 Each volume gives a complete list of the works and publications relating to 

 zoology in all its branches that have appeared during the preceding year. The 

 first volume was for the year 1864). 



The Index Medicus (Found in any Medical Library). 



Index Catalogue of the Surgeon General's Office. 



International Catalogue of Scientific Literature, "Zoology," "Botany," "General 

 Biology." (Pub. by Harrison & Sons, 45 St. Martin's Lane, London.) 



For popular articles : 



The Reader's Guide to Periodical Literature. 



The International Index to Periodicals. (Before Jan., 1921, The Reader's Guide 

 to Periodical Literature Supplement.) 



The books which have been of greatest service to the author are : 

 On General Biology 



Parker and Haswell, "Text-book of Zoology." 



L. A. Borradaile, "A Manual of Elementary Zoology." 



Shipley and MacBride, "Zoology." 



R. W. Hegner, "College Zoology." 



J. G. Needham, "General Biology." 



Linville and Kelly, "A Text-book in General Zoology." 



O. H. Latter, "The Natural History of Some Common Animals." 



Schull, Larue, and Ruthven, "Principles of Animal Biology." 



A. M. Marshall, "The Frog." 



S. J. Holmes, "The Biology of the Frog." 



H. S. Pratt, "A Manual of the Common Invertebrate Animals." 



Ward and Whipple, "Fresh-Water Biology." 



Sanderson and Jackson, "Elementary Entomology." 



Leland O. Howard, "The Insect Book." 



J. H. and Anna B. Comstock, "A Manual of the Study of Insects." 



Frank E. Lutz, "Fieldbook of Insects." 



J. W. Folsom, "Entomology with special reference to its Biological and 



Economic Aspects." 

 Riley and Johannsen, "Handbook of Medical Entomology." 

 W. T. Caiman, "The Life of Crustacea." 

 R. W. Hegner, "The Germ-Cell Cycle in Animals." 



W. E. Agar, "Cytology, with Special Reference to the Metazoan Nucleus." 

 L. Doncaster, "An Introduction to the Study of Cytology." 

 L. W. Sharp, "Introduction to Cytology." 



C. Hill, "A Manual of Normal Histology and Organography." 

 Krause-Schmahl, "A Course in Normal Histology." 

 W. E. Castle, "Genetics and Eugenics." 



E. G. Conklin, "Heredity and Environment in the Development of Man." 

 C. B. Davenport, "Heredity in Relation to Eugenics." 

 East and Jones, "Inbreeding and Outbreeding." 

 H. E. Walter, "Genetics." 



T. H. Morgan, "A Critique of the Theory of Evolution." 

 S. J. Holmes, "The Evolution of Animal Intelligence." 

 M. F. Washburn, "The Animal Mind." 

 H. S. Jennings, "Behavior of the Lower Organisms." 



