1. Behavioural effects of a prolonged treatment with small doses of morphine in cats

   • B. Djahanguiri
   • M. Richelle
   • O. Fontaine

   Original Investigations Pages: 363 - 372

2. Das Freßverhalten der Ratte

   • Alexander Borbély
   • Peter G. Waser

   Originalarbeiten Pages: 373 - 381

3. CO₂-induced retrograde amnesia in a one-trial learning situation

   • Robert I. Taber
   • Ali Banuazizi

   Original Investigations Pages: 382 - 391

4. Drug, doctor's verbal attitude and clinic setting in the symptomatic response to pharmacotherapy

   • E. H. Uhlenhuth
   • Karl Rickels
   • John Mock

   Original Investigations Pages: 392 - 418

5. The effects of different doses of methylpentynol on escape/avoidance conditioning in two strains of rats selectively bred for high and low “emotionality”

   • H. C. Holland
   • B. D. Gupta

   Original Investigations Pages: 419 - 425

6. Effect of tricyanoaminopropene on the amnesic effect of electroconvulsive shock

   • Walter B. Essman

   Original Investigations Pages: 426 - 433

7. Structure-activity relationship studies on mescaline: II. Tolerance and Cross-tolerance between mescaline and its analogues in the rat

   • J. R. Smythies
   • E. A. Sykes
   • C. P. Lord

   Original Investigations Pages: 434 - 446

8. Changes in behavior and electrocortical activity in the monkey following administration of 5-Hydroxytryptophan (5-HTP)

   • Frank J. Macchitelli
   • Donald Fischetti
   • Nicholas Montanarelli Jr.

   Original Investigations Pages: 447 - 456

9. Continuous temporal evaluation of the effect of meprobamate on critical flicker frequency in normal subjects

   • Henryk Misiak
   • Robert Zenhausern
   • W. Ronald Salafia

   Short Communications Pages: 457 - 461