SIXTH ANNUAL RECEPTION. 75- 



a 



EXPERIMENTAL PSYCHOLOGY. 



In Charge of Chas. H. Judd. 



1. New Ergographs. 



Exhibited by Professor J. McKeen Cattell. 



2. Methods and Apparatus for the Study of Accuracy 



OF Movement. 



Exhibited by Mr. R. S. Woodvvorth, Columbia Uni- 

 versity. 



3. Apparatus for the Study of Binocular Rivalry. 



Exhibited by Mr. B. B. Breese, Columbia University, 



4. Simple Photometer for Measuring Light Intensities in 



Schools. 



Exhibited by Mr. G. E.Johnson, New York University. 



5. Charts of Optical Illusions. 



Exhibited by Professor Chas. H. Judd, New York Uni- 

 versity. 



GEOLOGY AND GEOGRAPHY. 



In Charge of J. F. Kemp and R. H. Cornish. 



1. Geological and Topographical Model Illustrating the 



Yellowstone National Park, prepared for exhibi- 

 tion at the Paris Exposition in 1900. (Modeled by E. 

 E. Howell.) Exhibited by U. S. Geological Survey, 

 Washington, D. C. 



2. Series OF Maps Showing the Topographic Work of the 



U. S. Geological Survey. 



a. Printed map to show the progress of topographic map- 

 ping by the survey in the Eastern third of the United 

 States in 1898. 



b. Hand-colored map of New York State showing prog- 

 ress in topographic mapping last year. 



c. Five wall maps of portions of New York State, in- 



