1. Editorial

   • Z. Švestka
   • C. De Jager

   EditorialNotes Pages: 3 - 4

2. Abundances of the rare earths in the sun

   • N. Grevesse
   • G. Blanquet

   OriginalPaper Pages: 5 - 17

3. On the frequency dependence of the line source function

   • Gordon Worrall

   Research Note Pages: 18 - 19

4. On granulation models

   • P. R. Wilson

   Research Note Pages: 20 - 22

5. The intensity of the penumbra of large sunspots

   • P. Maltby
   • N. Mykland

   OriginalPaper Pages: 23 - 28

6. Motions in arch filament systems

   • A. Bruzek

   OriginalPaper Pages: 29 - 36

7. Stability analysis of the Kippenhahn-Schlüter model of solar filaments

   • U. Anzer

   OriginalPaper Pages: 37 - 52

8. Solar photography in the extreme ultraviolet

   • W. M. Burton

   OriginalPaper Pages: 53 - 71

9. Systematic photometry of XUV solar images

   • C. W. Allen

   OriginalPaper Pages: 72 - 87

10. Improvement of coronal emission line photographs

    • Thomas Pope

    Research Note Pages: 88 - 90

11. Le Fe XII dans la couronne d'émission

    • J. -P. Rozelot

    OriginalPaper Pages: 91 - 103

12. Plasma turbulence in solar flares as an explanation of some observed phenomena

    • M. Friedman
    • S. M. Hamberger

    OriginalPaper Pages: 104 - 114

13. A mechanism for the build-up of flare energy

    • Jan Olof Stenflo

    OriginalPaper Pages: 115 - 118

14. Microwave and hard X-ray bursts from solar flares

    • Stephen S. Holt
    • Reuven Ramaty

    OriginalPaper Pages: 119 - 141

15. Longitudinal distribution of X-bremsstrahlung on the solar disc

    • Štefan Pintér

    OriginalPaper Pages: 142 - 148

16. Homology of X-ray bursts

    • Š. Pintér

    Research Note Pages: 149 - 151

17. Cross-sections for the (⁴He, ³H) stripping reaction on Fe, Al, C and glass targets at an energy of 120 MeV

    • K. C. Anand
    • R. R. Daniel
    • S. A. Stephens

    Research Note Pages: 152 - 154

18. Power spectra of the interplanetary magnetic field

    • James W. Sari
    • Norman F. Ness

    OriginalPaper Pages: 155 - 165

19. A comparison of energetic storm protons to halo protons

    • S. W. Kahler

    OriginalPaper Pages: 166 - 185

20. Solar protons E > 100 MeV incident over antarctica during January–February 1967

    • J. R. Barcus

    OriginalPaper Pages: 186 - 203

21. Some features of the solar microwave emission and their connection with geomagnetic activity

    • J. Roosen

    OriginalPaper Pages: 204 - 225

22. Enhancement of ionizing radiation during a solar flare

    • O. K. Garriott
    • A. V. Da Rosa
    • G. D. Thome

    OriginalPaper Pages: 226 - 239

23. Solar-terrestrial research and services in the ESSA Research Laboratories, Environmental Science Services Administration, Boulder, Colo., U.S.A.

    • R. H. Olson

    Report from Solar Institute Pages: 240 - 247

24. Abstracts of papers from other journals

    • Jay M. Pasachoff
    • P. AmbroŽ
    • O. Namba

    Abstract Pages: 248 - 248

25. Abstracts of forthcoming papers

    Abstract Pages: 249 - 252