1. The distinction between the conditional and the unconditional reflex

   • W. Horsley Gantt

   Editorial Pages: 1 - 3

2. Conditioning the cardiorespiratory dynamics of locomotion in dogs

   • Josef Antal

   OriginalPaper Pages: 4 - 17

3. News and Notes

   News Pages: 17 - 17

4. Experimental evidence of the second signaling system of man

   • Takashi Hayashi

   OriginalPaper Pages: 18 - 28

5. Orienting-reflex behavior and clinical psychopathology

   • S. Hattangadi
   • A. Lidsky
   • T. A. Ban

   OriginalPaper Pages: 29 - 33

6. Conditioning, sensations, and the ergotropic-trophotropic balance

   • Ernst Gellhorn

   OriginalPaper Pages: 34 - 44

7. The history of a catatonic dog

   • Joseph E. O. Newton
   • W. Horsley Gantt

   OriginalPaper Pages: 45 - 61

8. Book Reviews

   • W. Horsley Gantt

   BookReview Pages: 62 - 64