1. The hazard of cigarette smoke to nonsmokers

   • Peter Fong

   OriginalPaper Pages: 65 - 73

2. On the density of intracellular water

   • James S. Clegg
   • W. Drost-Hansen

   OriginalPaper Pages: 75 - 84

3. ¹H and¹³C NMR studies of the spatial arrangement ofp-nitrophenol and acetate at the catalytic sites of Mn(II)-and Co(II)-substituted human carbonic anhydrase C

   • Raj K. Gupta
   • John M. Pesando

   OriginalPaper Pages: 85 - 92

4. Resolution of the potassium pool size controversy in insect midgut

   • James T. Blankemeyer

   OriginalPaper Pages: 93 - 101

5. Book review

   • Calvin G. Beames Jr.

   BookReview Pages: 102 - 102

6. Ascent of sap in plants by means of electrical double layers

   • M. Amin

   OriginalPaper Pages: 103 - 109

7. Biochemical oscillations and the development of organization

   Erratum Pages: 111 - 112