Reactions of I so pods 



TABLE VI— Continued 



459 



C.T. CIDOTEA 



BODY USER 



STEEL BALL 



Distance of fall ia cm. ... 50 20 10 5 2 83 .6 50! •^o 20 10 5 



Momenta, in C. G. .S. units 1097 694 471 347I 219 219 169; i ■^ 1 107 76 4 



Grades of mom na I 1 2 3 45 67 8 9 10 ll 



T^, 10 [ No. of responses. 



IQ IQ 



Vigor of responses 75 67 69 



No. of responses , 20 



Vigor of responses 94 



No. of responses 13 



Vigor of responses 41 



1 No. of responses 18 



j Vigor of responses 55: 



I No. of TL'sponses ' 16 



j Vigor of responses 63J 



1 No.of r.'sponses ! 7<?| 



75 78 



14 



37' 

 161 



67! 



'5\ 



7 S 



14 



47' 



long J Vigor of responses j 641 551 36 



^9; 



24 



5 

 16 



Total number of responess 103 89 80 71! 34' 34 23 



Average number of responses to 20 trials 175 14H 13;! lis, 5si! SsJ 3s 



Average sum of the responses to 20 trials 6i;.i 52 43 4151 iSJi! igj 11 



Average vigor of responses , 3.8 3 .5 3 .23 3 .48 3 .29: 3 .41' 2. 87 



4 

 16 



7 



7 



19 19 



35 3^, 2i I^ 

 10* 75I 5 2* 



3.3i'2.47; 2.32.14 



Average vigor of responses to whatever stimulus, 3.37 



age number of responses out of 20 trials to stimulations of grades 

 I to 7, II i, 8§, 6^, ^^, i^, and g. To the same grades of stim- 

 uli Caecidotea gave the following average number of reactions: 

 17^, 14^, 13^, i\%, 5§, 5i|, and 3^1^, while the reactivenesscontinued 

 to stimuli of grades 8,9, 10, and i i with the following average num- 

 ber of responses: 3, ^, 2^, 2^, and I ^. The averages for the vigorof 

 the responses of Asellus for the grades of stimuli i to 7 were of the 

 grades of response 1.61, 2, 1.74, 1.88, 2.2, 1.57, and 2. The corres- 

 ponding averages for Caecidotea were 3.8, 3.5, 3.23, 3.48, 3.29, 

 3.41, and 2.87, while to the lowest grades of stimulation to which 

 Asellus did not respond the averages of Caecidotea's responses were 

 3.31, 2.47, 2.3, and 2.14. The average on the basis of vigor of 

 respo:"!se for the whole number of reactions obtained from Asellus 



