CONTENTS. 



The Relation of the Motor Endings on the Muscle of the Frog 

 to Neighboring Structures. By John Gordon Wilson, 

 M.A., M.B. (Edin.) From the Hull Anatomical Labora- 

 tory of the University of Chicago. With Plates I and II. i 



Space Perception of Tortoises. By Robert M. Yerkes. From 



tite Harvard 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, Eupagtirus 

 longicarpus. By E. G. Spaulding, Ph.D. (Bonn). Col- 

 lege of the City of New York 49 



Editorial 62 



The Mid-Winter Meetings 65 



Literary Notices 70 



Animal Education, 70 — Metaphysics in Comparative Psychology, 72 — 

 Clapar^de on Animal Consciousness, 74 — The Measurement of Mental Traits, 

 76 — Are Sounds, Made in the Air, Audible in the Water? 80 — Edingerand 

 Wallenberg's Bericht, 81 — Substitution of Function after Nerve Anastomo- 

 sis, 81 — The Cerebral Commissures Again, 81 — The Homologies of the Cere- 

 bellar Fissures, 82 — Mendel and Jacobsohn's Jahresbericht, Zt^ — Allis on 

 the Anatomy of the Mackerel, 83. 



THE JOURNAL OF COMPARATIVE NEUROLOGY AND PSY- 

 CHOLOGY is published bi-monthly. The annual volume of six numbers 

 comprises about 500 pages, with plates and text-figures. The subscription price 

 is $4.00 a year, strictly net {foreign subscription, $4.30, 18 s., M. 18, 22 fr., 

 L. 22), postage prepaid. 



Authors receive 50 reprints of their papers gratis and additional copies 

 are supplied at cost. All MSS. and matter for review relating to the Structure 

 of the Nervous System and all business correspondence should be addressed 

 to the Managing Editor at Denison University, Granville, Ohio. 

 Editorial Matter relating to Comparalive Psychology and the Physiology of the 

 Nervous System should be sent directly to Dr. Robert M. Yerkes, Psycho- 

 logical Laboratory, Harvard University, Cambridge, Mass. 



Application filed for entry as second-class matter in the Postotfice at Granville, 0. 



