1. Studies of granular velocities

   • J. P. Mehltretter

   OriginalPaper Pages: 253 - 271

2. Determination of solar Doppler widths by Goldberg's method

   • A. R. Dunn
   • E. C. Olson

   OriginalPaper Pages: 272 - 285

3. Analytic solutions to the Unno transfer equations for the Stokes parameters in a Milne-Eddington atmosphere

   • M. J. Hagyard

   Research Note Pages: 286 - 287

4. Empirical solar continuum models

   • J. L. Remo

   OriginalPaper Pages: 288 - 292

5. Interpretation of the solar continuum from 1680 to 600 Å. Model of the transition region photosphere-chromosphere and of the chromosphere

   • Yvette Cuny

   OriginalPaper Pages: 293 - 313

6. Calculations of two-dimensional models of the lower solar chromosphere

   • C. J. Cannon

   OriginalPaper Pages: 314 - 327

7. On the center to limb variation of the separation of the Mg ii, H₂ and K₂ emission peaks

   • A. Greve

   OriginalPaper Pages: 328 - 335

8. λ 4097.3 Niii emission in the chromospheric spectrum?

   • D. L. Lambert

   OriginalPaper Pages: 336 - 339

9. The molecular spectrum of sunspots

   • John C. Webber

   OriginalPaper Pages: 340 - 361

10. On molecules in sunspots

    • H. Wöhl

    OriginalPaper Pages: 362 - 372

11. Unusual rotation of a sunspot 30 September to 8 October 1969

    • Richard A. Miller

    OriginalPaper Pages: 373 - 378

12. A new empirical model of a sunspot umbra

    • Hong Sik Yun

    OriginalPaper Pages: 379 - 383

13. On the magnetic fields and motions in sunspots at different atmospheric levels

    • H. I. Abdussamatov

    OriginalPaper Pages: 384 - 397

14. A magnetostatic sunspot model with ‘twisted’ field

    • Hong Sik Yun

    OriginalPaper Pages: 398 - 403

15. Eclipse measurements near 1.2 cm wavelength on September 11, 1969

    • Mohamed El-Raey

    OriginalPaper Pages: 404 - 412

16. On the problem of the flare-like emission in sodium lines

    • E. A. Gurtovenko

    OriginalPaper Pages: 413 - 416

17. The impulsiveness of microwave bursts and its association with sunspot types

    • O. T. Matsuura
    • M. F. F. Nave

    OriginalPaper Pages: 417 - 422

18. The explosive phase of solar flares

    • Karen L. Harvey

    OriginalPaper Pages: 423 - 430

19. Solar soft X-rays and solar activity

    • Roger J. Thomas
    • Richard G. Teske

    OriginalPaper Pages: 431 - 453

20. The location and size of a solar hard X-ray burst on September 27, 1969

    • T. Takakura
    • K. Ohki
    • S. Ota

    OriginalPaper Pages: 454 - 464

21. The origin of flare produced hard X-rays

    • R. W. Milkey

    Research Note Pages: 465 - 468

22. A comment on solar flare iron line emission at 1.9 Å

    • K. J. H. Phillips
    • J. L. Culhane

    Research Note Pages: 469 - 471

23. The effect of Alfvén waves on MHD fast shocks

    • M. Scholer
    • J. W. Belcher

    OriginalPaper Pages: 472 - 483

24. Solar proton event classification system

    • D. F. Smart
    • M. A. Shea

    Research Note Pages: 484 - 487

25. Comments on ‘solar activity, 27-day variation and long-term modulation of cosmic-ray intensity’ by V. K. Balasubrahmanyan and D. Venkatesan

    • J. A. Lockwood

    Research Note Pages: 488 - 489

26. The Shemakha Astrophysical Observatory of the Academy of Sciences of the Azerbaijan S.S.R.

    • R. E. Guseinov

    Report from Solar Institute Pages: 490 - 492

27. The High Altitude Solar Station Peak Alma-Ata

    • Saken Obashev

    Report from Solar Institute Pages: 493 - 496

28. Solar activity observations at Uccle and Humain stations

    • A. Koeckelenbergh

    Report from Solar Institute Pages: 497 - 500

29. Abstracts of forthcoming papers

    Abstract Pages: 501 - 507

30. Abstracts of papers from other journals

    Abstract Pages: 508 - 511