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RAYMOND PEARL. 



ness to all of those who cooperated in the investigation, and his 

 appreciation of the painstaking interest and care given to the 

 sorting and counting by all. Table I. gives the name, academic 

 degree and official position of each of the cooperating indi- 

 viduals. For convenience of reference in the paper each observer 

 has been assigned a Roman numeral. 



TABLE I. 



LIST OF OBSERVERS COOPERATING IN THE PRESENT STUDY. 



Certain points regarding this list of cooperators need to be 

 discussed. In the first place it is obvious that any one of them 

 (with the possible exception of X.) might in the ordinary course 

 of his work carry out a Mendelian experiment with maize, either 

 independently or in cooperation with someone else. It this were 

 done and the results published they would certainly be accepted 

 by the biological public as a precise and true statement of the 

 facts regarding the material which was in the experimenter's 

 hands. That is, if any worker in this list published a statement 

 that a Mendelian experiment which he had conducted with 



1 At the time this work was done: Associate Biologist, Maine Experiment 

 Station. 



