TABLE I. SUMMARY OF REACTIONS TO WHITE LIGHT

Group 1 Group 2 Totals
+± +± +±
I.234829 234829
II.49474 1981 681284
III.4060 3070 70130
IV.47521 3664 831161
V.5149 3070 81119
VI.3961 3961 78122
VII.2872 28711 561431
VIII.35632 37603 721235
31245236 2194774=53192940= 1500

The following table gives the average time required for orientation for each group. The time of each animal in seconds was noted with a stop-watch from the instant the animal was placed in the box until a definite orientation was assumed with reference to the light. If no orientation followed within three minutes, the result was called indifferent.