ATMOSPHERIC SULFUR AND ITS LINKS TO THE BIOTA 179 



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8. J. P. Friend, The Global Sulfur Cycle, in Chemistry of the Lower Atmosphere, S.I. 

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9. M. Katz and G. A. Ledingham, in Effect of Sulfur Dioxide on Vegetation, Publication 

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10. D. J. Spedding, Uptake of Sulphur Dioxide by Barley Leaves at Low Sulphur Dioxide 

 Concentrations, Nature, 224: 1229-1231 (1969). 



11. A. C. Hill, Vegetation: A Sink for Atmospheric Pollutants, J. Air Pollut. Contr. Ass., 21: 

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12. A. Martin and F. R. Barber, Some Measurements of Loss of Atmospheric Sulphur 

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13. F. B. Abeles, L. E. Craker, L. E. Forrence, and G. R. Leather, Fate of Air Pollutants: 

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14. R. C. Braun and M. J. G. Wilson, The Removal of Atmospheric Sulfur by Building 

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15. P. S. Liss, Exchange of S0 2 Between the Atmosphere and Natural Waters, Nature, 233: 

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16. C. C. Webster, The Effects of Air Pollution on Plants and Soil, pp. 9-26, Agricultural 

 Research Council, London, 1967. 



17. F. P. Terraglio and R. M. Manganelli, The Absorption of Atmospheric Sulfur Dioxide by 

 Water Solutions, J. Air Pollut. Contr. Ass., 17: 403-406 (1967). 



18. G. E. Likens, F. H. Bormann, and N. M. Johnson, Acid Rain, Environment, 14: 33-40 

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19. A. Engstrom, Air Pollution Across National Boundaries, the Impact on the Environment 

 of Sulfur in Air and Precipitation, Report of the Swedish Preparatory Committee for the 

 U. N. Conference on Human Environment, Kunglig Boktryckeriet P. A. Norstedt et 

 Sdner, Stockholm, 1971. 



20. S. Oden, as cited by Likens et al. 1 8 



21. H. Reiquam, An Atmospheric Transport and Accumulation Model for Airsheds, Atmos. 

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22. H. Reiquam, Sulfur: Simulated Long-Range Transport in the Atmosphere, Science, 170: 

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23. R. E. Munn and B. Bolin, Global Air Pollution — Meteorological Aspects, Atmos. 

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24. F. J. Pearson, Jr., and D. W. Fisher, Chemical Composition of Atmospheric Precipitation 

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25. F. H. Schmidt and C. A. Velds, On the Relation Between Changing Meteorological 

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Rotterdam, A tmos. Environ., 3: 455-460 (1969). 



26. J. Postgate, Sulphate Reduction by Bacteria, Annu. Rev. Microbiol., 13: 505-520 



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27. J. W. M. La Riviere, The Microbial Sulfur Cycle and Some of Its Implications for the 

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28. G. E. Hutchinson, A Treatise on Limnology, Vol. 1, pp. 758-760, John Wiley & Sons, 

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29. G. E. Hutchinson, ibid., pp. 760-764. 



30. B. A. Skopintsev, A. V. Karpov, and O. A. Vershinina, Study of the Dynamics of Some 

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