meagre content of our tests: there the actions of living men, here the space relations of little spots. But they evidently did not sufficiently realize that the forming of such number judgments was not at all a question of mere perception; that on the contrary many considerations were involved; most men felt the similarity from the start. What were the results of this first group of experiments? Our interest must evidently be centred on the question of how many judgments were correct at the first vote before any discussion and any show of hands were influencing the minds of the men, and how many were correct at the last vote after the two periods of discussion and after taking cognizance of the two preceding votes. If I sum up all the results, the outcome is that 52 per cent. of the first votes were correct and 78 per cent. of the final votes were correct. The discussion of the successive votes had therefore led to an improvement of 26 per cent. of all votes. Or, as the correct votes were at first 52 per cent., their number is increased by one half. May we not say that this demonstrates in exact figures that the confidence in the jury system is justified? And may it not be added that, in view of the widespread prejudices, the result is almost surprising? Here we had men of high intelligence who were completely able to take account of every possible aspect of the situation. They had time to do so, they had training to do so, and every foregoing experiment ought to have stimulated them to do so in the following ones. Yet their judgment was right in only 52 per cent. of the cases until they heard the opinions of the others and saw how they voted. The mere seeing of the vote, however, cannot have been decisive, because 48 per cent., that is, practically half of the votes, were at first incorrect. The wrong votes might have had as much suggestive influence on those who voted rightly as the right votes on those on the wrong side. If, nevertheless, the change was so strongly in the right direction, the result must clearly have come from the discussion.