CONTENTS

[EMERSON HALL:] Hugo Münsterberg.
I. Experimental Psychology in Harvard[3]
II. The Need for Emerson Hall[8]
III. Emerson as Philosopher[16]
IV. The Place of Experimental Psychology[31]
V. The Psychological Laboratory in Emerson Hall[34]
[OPTICAL STUDIES.]
Stereoscopic Vision and the Difference of Retinal Images: G. V. Hamilton[43]
Eye-Movements during Dizziness: E. B. Holt[57]
Vision during Dizziness: E. B. Holt[67]
Visual Irradiation: Foster Partridge Boswell[75]
[FEELING.]
The Expression of Feelings: F. M. Urban[111]
The Mutual Influence of Feelings: John A. H. Keith[141]
The Combination of Feelings: C. H. Johnston[159]
The Æsthetics of Repeated Space Forms: Eleanor Harris Rowland[193]
The Feeling-Value of Unmusical Tone-Intervals: L. E. Emerson[269]
[ASSOCIATION, APPERCEPTION, ATTENTION.]
Certainty and Attention: Frances H. Rousmaniere[277]
Inhibition and Reënforcement: Louis A. Turley[293]
The Interference of Optical Stimuli: H. Kleinknecht[299]
Subjective and Objective Simultaneity: Thomas H. Haines[309]
The Estimation of Number: C. T. Burnett[349]
Time-Estimation in its Relations to Sex, Age, and Physiological Rhythms:
Robert M. Yerkes and F. M. Urban [405]
Associations under the Influence of Different Ideas: Bird T. Baldwin[431]
Dissociation: C. H. Toll[475]
[MOTOR IMPULSES.]
The Accuracy of Linear Movement: B. A. Lenfest[485]
The Motor Power of Complexity: C. L. Vaughan[527]
[ANIMAL PSYCHOLOGY.]
The Mutual Relations of Stimuli in the Frog Rana Clamata Daudin:
Robert M. Yerkes [545]
The Temporal Relations of Neural Processes: Robert M. Yerkes[575]
The Mental Life of the Domestic Pigeon: John E. Rouse[581]
Reactions of the Crayfish: J. Carleton Bell[615]