78 



ELIZABETH LOCKWOOD THOMPSON 



TABLE Xn— {Continued) 



Summary — Snail No. 10 — (Continued) 

 No. of No. of 



Total number of trials 173 



Total number correct by chance 84 approximately 48% 



Total number correct by association 22 approximately 13% 



Total number incorrect 67 approximately 39% 



Summary — Snail No. 13 



Choices Choices 



No. of correct correct 



days No. of by by Incorrect 



tested trials chance association choices 



Total number of trials 121 



Total number correct by chance 62 approximately 51% 



Total number correct by association 14 approximately 12% 



Total number correct by chance 45 approximately 37% 



Summary — Snail No. 19 



Choices Choices 

 No. of correct correct 



days No. of by by Incorrect 



tested trials chance association choices 



