Circular 20. December, 1900. 



Cornell University College of Agriculture and 

 Agricultural Experiment Station, 



ITHACA, N. Y. 



AGRICULTURAL AND CHEMICAL DIVISIONS. 



I. p. ROBERTS. Director. 



CONCERNING 



CO-OPERATIVE EXPERIMENTS, 



By J. L. STONE. 



Published under the provisions of chapter 430 of the Laws of 1899. 



PUBLISHED BY THE UNIVERSITY, 



ITHACA, N. Y. 



1900. 



