1. The thymus humoral factor under scrutiny

   • A. J. S. Davies

   Review Article Pages: 1 - 7

2. A mechanism of quinidine-induced changes in the contraction force of guinea-pig atria

   • Philip B. Hollander
   • Henry R. Besch Jr.

   Research Reports Pages: 8 - 12

3. Some properties of the junctional and extrajunctional receptors in the vas deferens of the guinea-pig

   • Yoshiki Hotta

   Research Reports Pages: 13 - 21

4. Functional aspects of the cholestatic response induced by α-naphthylisothiocyanate in mice and rats

   • Gabriel L. Plaa

   Research Reports Pages: 22 - 27

5. Effects of phenothiazines on the surface pressures, potentials and viscosities of monolayers of lecithin and/or cholesterol¹

   • D. F. Sears
   • K. K. Brandes

   Research Reports Pages: 28 - 35

6. Facilitating effects of pre- and posttrial amphetamine administration on discrimination learning in mice

   • Jara A. Krivanek
   • James L. McGaugh

   Research Reports Pages: 36 - 42

7. Combined toxicity of ethanol with chlorpromazine, diazepam, chlormethiazole or pentobarbital in mice

   • H. Vapaatalo
   • H. Karppanen

   Research Reports Pages: 43 - 45

8. Are biogenic amines involved in the mechanism of action of the tetrahydrocannabinols?

   • Rose Dagirmanjian
   • Harold C. Hodge

   Hypothesis Pages: 46 - 48

9. Historical note

   • H. M. Koelbing

   Announcement Pages: 49 - 52