1. Preface

   • N. Khitarov

   EditorialNotes Pages: 1 - 1

2. Gases of Icelandic hydrothermae

   • S. A. Arnorsson
   • V. I. Kononov
   • B. G. Polak

   OriginalPaper Pages: 2 - 14

3. Variations in the carbon, sulfur and chlorine contents of volcanic gas discharges from White Island, New Zealand

   • W. F. Giggenbach

   OriginalPaper Pages: 15 - 27

4. Stable isotope ratios of volcanic steam from White Island, New Zealand

   • M. K. Stewart
   • J. R. Hulston

   OriginalPaper Pages: 28 - 46

5. Equilibrium calculations in volcanic gaseous systems

   • V. P. Volkov
   • G. I. Ruzaykin

   OriginalPaper Pages: 47 - 63

6. Some results from recent chemical studies at Kilauea volcano, Hawaii

   • J. J. Naughton
   • J. B. Finlayson
   • V. A. Lewis

   OriginalPaper Pages: 64 - 69

7. The use of chemical indicators in the surveillance of volcanic activity affecting the Crater Lake on Mt Ruapehu, New Zealand

   • W. F. Giggenbach
   • R. B. Glover

   OriginalPaper Pages: 70 - 81

8. Geochemical indicators and seismic phenomena

   • I. Iwasaki

   OriginalPaper Pages: 82 - 90

9. Forecast of volcanic eruptions by chemical methods

   • I. Iwasaki
   • T. Ozawa
   • M. Kamada

   OriginalPaper Pages: 91 - 103

10. Dependence of the chemical composition of thermal waters upon seismic activity

    • E. K. Markhinin
    • L. I. Bozhkova

    OriginalPaper Pages: 104 - 111

11. Prediction of eruptions using changes in composition of volcanic gases

    • I. A. Menyailov

    OriginalPaper Pages: 112 - 125

12. Radon as a possible criterion for predicting eruptions as observed at Karymsky volcano

    • A. M. Chirkov

    OriginalPaper Pages: 126 - 131

13. A simple method for the collection and analysis of volcanic gas samples

    • W. F. Giggenbach

    OriginalPaper Pages: 132 - 145

14. Review of work on geochemical forecasts of eruptions and interaction of seismic phenomena and geochemical indicators in the south pacific area

    • R. B. Glover

    ReviewPaper Pages: 146 - 158