1. Editor’s message

   OriginalPaper Pages: 1 - 1

2. Effect of aging on oxidative metabolism and conjugation in perfused livers of an inbred strain of mice: A pilot study

   • M. Danis
   • D. E. Harrison
   • R. G. Thurman

   OriginalPaper Pages: 3 - 8

3. Feeding effects of peroxidase on survivorship in Drosophila melanogaster

   • Ruth H. LiBassi
   • Linda K. Dixon

   OriginalPaper Pages: 9 - 11

4. The effect of dietary vitamin, protein, and intake levels on the life span of mice of different ages

   • Gertrude C. Kokkonen
   • Charles H. Barrows

   OriginalPaper Pages: 13 - 17

5. Nerve growth factor accelerates regeneration of cultured adult sympathetic ganglion cells

   • Y. Uchida
   • M. Tomonaga

   OriginalPaper Pages: 19 - 20

6. Wisconsin ginseng and aging

   • Harold R. Massie
   • Trevor R. Williams

   Letters to the Editor Pages: 21 - 21

7. Notices

   Announcement Pages: 22 - 22