1. A behavioral and pharmacological analysis of reinforcement withdrawal

   • George A. Heise
   • Nell Laughlin
   • Connie Keller

   Original Investigations Pages: 345 - 368

2. The effects of noradrenaline on rat's behaviour

   • Zbigniew S. Herman

   Original Investigations Pages: 369 - 374

3. Persistence of “relapse-tendencies” of rats previously made physically dependent on morphine

   • Abraham Wikler
   • Frank T. Pescor

   Original Investigations Pages: 375 - 384

4. Biological activities of some 5-substituted N,N-dimethyltryptamines, α-methyltryptamines, and gramines

   • Beng T. Ho
   • William M. McIsaac
   • Mauno M. Airaksinen

   Original Investigations Pages: 385 - 394

5. Inhibition of hepatic hexobarbital metabolism by dextro amphetamine

   • Harbans Lal
   • Surendra K. Puri
   • George C. Fuller

   Original Investigations Pages: 395 - 398

6. Yeast ribonucleic acid: Analysis of effects on pole-climb avoidance behavior

   • Arnold B. Davidson
   • Leonard Cook

   Original Investigations Pages: 399 - 408

7. Effect of diethyldithiocarbamate on the toxicity of amphetamine in aggregated mice

   • E. Przegalinski
   • Z. Kleinrok

   Original Investigations Pages: 409 - 418

8. Serum CPK and aldolase activity in man following controlled administration of psychotomimetic drugs

   • H. Meltzer
   • W. Pahnke
   • R. Henkin

   Short Communications Pages: 419 - 425

9. On the combined effects of amphetamine and food deprivation: A reply to Gollub and Mann

   • Sherwood O. Cole

   Short Communications Pages: 426 - 429

10. Protein and RNA inhibitors and protozoan habituation

    • Frank T. Gardner
    • Philip B. Applewhite

    Short Communications Pages: 430 - 433

11. Effect of chronic administration of p-chlorophenylalanine on sexual receptivity of the female rat

    • David S. Segal
    • Richard E. Whalen

    Short Communications Pages: 434 - 438