IS MXETEENTH REPORT. 



12:00 in. I.imcheon tor Biologists, Room B 100, Xatural Sciencj- Buildinp. 



Tickets may he secured at the door, price 2,5c. 

 2:00 p. in. Meeting of the Section of Economics. 



(i:00 ]). 111. Informal dinner at the Michigan I'liion for the Political Economists. 

 H:00 )). 111. Puhlic lecture, hv Professor George Sarton, "Geographic Knowledge 



in the Time of Leonardo da Vinci." (Illustrated.) .Auditorium, 



Natural Science Building. 



Saturday, Mabch 31 



9:00 a. in. fleeting of the Section of Economics. 

 2:00 p. 111. Meeting of the Section of Economics. 



SECTION OF ZOOLOGY 



Robert W. Hegner, Chairman 



Room Z 355, Natural Science Building 



Wednesday, March 28, 3:00 p. m.. .\xd 

 Thursday, March 29, 9:30 a. m. and 1:30 i-. m. 



Symposium on the Method of Evolution 



1. From the standpoint of paleontology, by Professor E. C. Case. 



2. From the standpoint of zoogeography, by Professor Alexander G. Ruthven. 



3. From the standpoint of conchology, by Dr. Bryant Walker. 



I. From the standpoint of comparative psychology, by Professor John F. 



Shepard. 

 5. I'Voiii the standj)oint of genetics, hy Professor A. I'lankliii Shull. 



Papers on ^Methods 



1. A method of cataloging and filing j)hotographic negatives and j)rints, by 



Crystal Thompson. 



2. Some remarks on the preservation of Reptiles and Amphibians for museum 



purposes, by Alexander G. Ruthven. 



3. Methods of collecting Formicidae for museum purposes, by Frederick M. 



Gaige. 

 1. Notes on ostrich farming in northern latitudes, by Harry C. Fortner. 

 5. Some methods of preparing a study collection of zoological specimens, by 



Peter Okkelberg. 

 (). Some methods for the culture of microorganisms, by George R. La Rue. 

 7. The preparation of insects for exhibition purposes, by Robert W. Hegner. 

 *8. Terraria and balanced aquaria in the laboratory, by Elizabeth L. Thompson. 

 9. Methods of recording fauna data, by Grace Powers. 



10. Methods of taking a bird census, by H. B. Sherman. 



11. A simple method of jirojection with ,i compound microscope, by A. G. 



Papworth. 



*Papers marked with a * are printed in this report. 



