The Journal of 

 Comparative Neurology and Psychology 



Contents of Volume XIV, 1904. 



Number 1, March, 1904. 



The Relation of the Motor Endinj^s on the Muscle of the Frog to Neigh- 

 boring Structures. By John Gordon Wilson, M.A., M.B. 

 (Edin.) hrovi the Hull Analoiiiical Laboratory of the University 

 of Chicago. With Plates I and II i 



Space Perception of Tortoises. By Robert M. Yerkes. From the Har- 

 vard Psychological Laboratory. . . . . . . . 17 



A 'Note on the Significance of the Form and Contents of the Nucleus in 

 the Spinal Ganglion Cells of the Foetal Rat. By Shinkishi 

 Hatai. From the Neurological Laboratory of the University of 

 Chicago. With Plates III and IV 27 



An Establishment of Association in Hermit Crabs, Eupagurus longicar- 

 pus. By E. G. Spaulding, Ph.D. (Bonn). College of the City 

 of Ne'w York. .......... 49 



Editorial. 62 



The Mid-Winter Meetings 65 



Literary Notices 70 



Number 2, April, 1904. 



Physiological Evidence of the Fluidity of the Conducting -Substance in 



the Pedal Nerves of the Slug — Ariolimax columbianus. By O. P. Jen- 

 kins and A. J. Carlson. From the Physiological Laboratory of 

 Leland Sanforci, Jr., Unizersity. With one figure. ... 85 



The Nervous Structures in the Palate of the Frog : the Peripheral Net- 

 works and the Nature of their Cells and Fibers. By C. W. Pren- 

 tiss, Instructor of Biology, Western Reserve University. With 12 

 figures. ............ 93 



The Beginning of Social Reaction in Man and Lower Animals. By C. L 



Herrick, Socorro, A'eiv Mexico. . . . . . . .118 



Inhibition and Reinforcement of Reaction in the Frog, Rana clamitans 

 By Robert M. Yerkes. Fro)n the Harvard Psychological Labora 

 tory 124 



On the Behavior and Reactions of Limulus in Early Stages of its Devel 

 opment. By Raymond Pearl. From the Zoological Laboratory of 

 the University of Michigan. With one figure. . . . .138 



Editorial. 165 



Recent Studies on the Finer Structure of the Nerve Cell. By G. E. 



COGHILL, Professor of Biology, Pacific University. . . .171 



Literary Notices. ......... . 203 



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