1. Chemical transfer of learned behavior

   • Georges Ungar

   Review Article Pages: 155 - 163

2. The effect of amphetamine and tyramine on the guinea-pig urinary bladder

   • D. M. Hawke
   • G. B. Chesher

   Research Reports Pages: 164 - 171

3. Retinoic acid: Topical treatment of senile or actinic keratoses and basal cell carcinomas

   • W. Bollag
   • F. Ott

   Research Reports Pages: 172 - 175

4. Experiments on the mechanism of action of caerulein at the level of the guinea-pig ileum and colon

   • M. Del Tacca
   • G. Soldani
   • A. Crema

   Research Reports Pages: 176 - 182

5. Intestinal mucous membranes: The role of interfacial phenomena

   • D. F. Sears

   Research Reports Pages: 183 - 189

6. Psilocybin-induced contraction of nearby visual space

   • Roland Fischer
   • Richard Hill
   • James Scheib

   Research Reports Pages: 190 - 197

7. Activated expirations in pigeons

   • K. Bucher

   Research Reports Pages: 198 - 205

8. Blood glucose, serum GOT and tissue catecholamines in rats after combined ethanol-tranquilizer administration

   • H. Vapaatalo
   • H. Karppanen

   Research Reports Pages: 206 - 210

9. Scientific autographs — IV

   • H. M. Koelbing

   Historical Document Pages: 211 - 214