1. Cross tolerance to tryptamine in the LSD tolerant dog

   • W. R. Martin
   • C. G. Eades

   Original Investigations Pages: 93 - 98

2. Enhanced behavioral depressant effects of reserpine and α-methyltyrosine after 6-hydroxydopamine treatment

   • Barrett R. Cooper
   • George R. Breese
   • Lester D. Grant

   OriginalPaper Pages: 99 - 110

3. Possible anticholinesterase-like effects of trans(−)δ⁸ and -δ⁹tetrahydrocannabinol as observed in the general motor activity of mice

   • Hugh Brown

   OriginalPaper Pages: 111 - 116

4. The effect of pre-natal Cannabis Sativa on maze learning ability in the rat

   • Gerald Gianutsos
   • Elvera R. Abbatiello

   OriginalPaper Pages: 117 - 122

5. Comparaison de l'effet somnogène de deux médicaments, le Ro 5-4200 et le Nitrazepam

   • M. Schuler
   • J. -M. Gaillard
   • R. Tissot

   OriginalPaper Pages: 123 - 130

6. Influences of alcohol and S-R uncertainty upon spatial localization time

   • M. S. Huntley Jr.

   OriginalPaper Pages: 131 - 140

7. The macro- and microdistribution and polymorphic electroencephalographic effects of δ⁹-tetrahydrocannabinol in the rat

   • M. E. Shannon
   • P. A. Fried

   OriginalPaper Pages: 141 - 156

8. Hippocampal injections of magnesium pemoline and the extinction of a bar press response in rats

   • Elizabeth Hepburn
   • James C. Saunders

   OriginalPaper Pages: 157 - 162

9. Biphasic effects of δ⁹-tetrahydrocannabinol on variable interval schedule performance in rats

   • Michael G. Grisham
   • Douglas P. Ferraro

   OriginalPaper Pages: 163 - 169

10. Drug-induced syndromes in rats with large, chronic lesions in the corpus striatum

    • Ivan Divac

    OriginalPaper Pages: 171 - 178

11. Self administration of dextropropoxyphene by Rhesus monkeys to the point of toxicity

    • William H. Talley
    • Ira Rosenblum

    Preliminary Reports Pages: 179 - 182