1. The effects of pentylenetetrazole and methylphenoxypropane on discrimination learning

   • Earl Hunt
   • Jara Krivanek

   Original Investigations Pages: 1 - 16

2. Effects of chlordiazepoxide on the acquisition of avoidance learning and its transfer to the normal state and other drug conditions

   • E. Sachs
   • M. Weingarten
   • N. W. Klein Jr.

   Original Investigations Pages: 17 - 30

3. Sex and race differences in response to drug treatment among schizophrenics

   • Solomon C. Goldberg
   • Nina R. Schooler
   • Melvin M. Kayce

   Original Investigations Pages: 31 - 47

4. Metabolic fate of mescaline in man

   • K. D. Charalampous
   • K. E. Walker
   • John Kinross-Wright

   Original Investigations Pages: 48 - 63

5. Facilitation of bar pressing and “supression” of conditioned supression in cats as a function of alcohol

   • Patricia S. Goldman
   • Richard F. Docter

   Short Communications Pages: 64 - 72

6. The hypnotic and sedative effects of 3-methyl-3,4-dihydroxy-4-phenyl-butin-1, a two phase investigation employing double blind techniques and sequential analysis

   • S. G. Flavell Matts

   Short Communications Pages: 73 - 77

7. Evidence that the central action of amphetamine is mediated via catecholamines

   • L. C. F. Hanson

   Letters to the Editor Pages: 78 - 80