1. Solar dynamo theory and the models of Babcock and Leighton

   • J. H. Piddington

   OriginalPaper Pages: 3 - 19

2. On time variations of the solar differential rotation law and asymmetry of the global distribution of the solar activity

   • Hirokazu Yoshimura

   OriginalPaper Pages: 20 - 33

3. Fine structure of solar magnetic fields

   • Harold Zirin

   OriginalPaper Pages: 34 - 48

4. On the applicability of Goldberg and Unno's method to the determination of microturbulent velocities in an atmosphere with convection

   • C. De Jager
   • L. Neven

   OriginalPaper Pages: 49 - 52

5. A comparison between the helium 10830 Å and the hydrogen Hα chromospheres

   • R. G. Giovanelli
   • D. N. B. Hall
   • J. W. Harvey

   OriginalPaper Pages: 53 - 63

6. Remarks on the convergency of photospheric model conceptions and the solar quasi continuum

   • Dietrich Labs
   • Heinz Neckel

   OriginalPaper Pages: 64 - 69

7. Semi-empirical solar line blanketing

   • J. P. Mutschlecner
   • Charles F. Keller

   OriginalPaper Pages: 70 - 87

8. Analyse des renforcements coronaux a travers quelques acquisitions spectroscopiques récentes des émissions monochromatiques du fer ionisé (X à XV)

   • J. P. Rozelot

   OriginalPaper Pages: 88 - 113

9. Note on the helium-like ion line emission in solar plasmas

   • R. Mewe

   OriginalPaper Pages: 114 - 118

10. The crossover and magneto-optical effects in sunspot spectra

    • V. M. Grigorjev
    • J. M. Katz

    OriginalPaper Pages: 119 - 128

11. On the fine structure of the evershed effect

    • M. Mamadazimov

    OriginalPaper Pages: 129 - 136

12. Magnetic fields in umbral atmospheres under ‘similarity’ configuration

    • Hong Sik Yun

    Research Note Pages: 137 - 139

13. Observation of a smoke ring on October 30, 1970

    • Ichiro Kawaguchi
    • Nobuyuki Oda
    • Shun Mizuno

    Research Note Pages: 140 - 141

14. Quiet-Sun center-limb observations at 6 and 11 cm during cycle maximum

    • J. C. Ceballos
    • P. Lantos

    OriginalPaper Pages: 142 - 146

15. Pencil beam observation of a large microwave outburst at 94.8 GHz

    • J. R. Cogdell

    Research Note Pages: 147 - 149

16. Results from OSO-IV: The long term behavior of X-ray emitting regions

    • A. Krieger
    • F. Paolini
    • D. Webb

    OriginalPaper Pages: 150 - 177

17. Heating of the solar flare plasma by high energy electrons

    • Chung-Chieh Cheng

    OriginalPaper Pages: 178 - 188

18. Relativistic electrons from the Sun observed by IMP-4

    • G. M. Simnett

    OriginalPaper Pages: 189 - 219

19. Streaming of galactic cosmic rays in the interplanetary magnetic field

    • A. Hashim
    • M. Bercovitch
    • J. F. Steljes

    OriginalPaper Pages: 220 - 234

20. Note on the energy scale of the Michigan OSO III ion chamber

    • Richard G. Teske
    • Philip E. Hodge
    • Simon P. Worden

    OriginalPaper Pages: 235 - 239

21. Book reviews

    • C. de Jager
    • J. J. Quenby
    • H. R. Allan

    BookReview Pages: 240 - 242

22. Abstracts of forthcoming papers

    Abstract Pages: 243 - 251

23. Abstracts of papers from other journals

    • J. -C. Henoux
    • L. D. De Feiter
    • JAY M. Pasachoff

    Abstract Pages: 252 - 254