248 



Prof. C. S. Sherrington. Nervous Rhythm [Feb. 3, 



r 14 



from one experiment. In fig. 7a the combined stimuli gi ye fi ye steps 



in 14 sees., but strengthening stimulus r. to 13, so that the combined 

 r 13 



stimuli become 1 - J -r- ? , results (fig. 7b) in 13 steps during 17'5 sees., and 



1. 16 



r. 12 



strengthening both stimuli further still to ^ ' ^ produces (fig. 7c) five steps 



during 3'8 sees. 



