382 REINERS 



10. G. M. Woodwell, R. A. Houghton, and N. Tempel, Atmospheric C0 2 at Brookhaven, 

 Long Island, New York: Patterns of Variation Up to 125 Meters, J. Geophys. Res., 

 1973, in press. 



11. Inadvertent Climate Modification, Report of the Study of Man's Impact on Climate 

 (SMIC), The MIT Press, Cambridge, Mass., 1971. 



12. T. H. Maugh III, Carbon Monoxide: Natural Sources Dwarf Man's Output, Science, 177: 

 338-339(1972). 



1 3. T. Yoshida and M. Alexander, Nitrous Oxide Formation by Nitrosomonas europaea and 

 Heterotrophic Microorganisms, Soil Sci. Soc. Amer., Proc, 34: 880-882 (1970). 



14. S. Edelberg, Some Considerations in the Use of Remote Environmental Monitoring, in 

 Man's Impact on the Climate, pp. 482-501, W. H. Mathews, W. W. Kellogg, and G. D. 

 Robinson (Eds.), The MIT Press, Cambridge, Mass., 1971. 



15. D. R. Hitchcock and A. E. Wechsler, Biological Cycling of Atmospheric Trace Gases, 

 Arthur D. Little, Inc., Cambridge, Mass., 1972. 



16. W. S. Broecker, Y. Li, and T. Peng, Carbon Dioxide — Man's Unseen Artifact, in 

 Impingement of Man on the Oceans, pp. 287-324, D. W. Hood (Ed.), John Wiley & 

 Sons, Inc., New York, 1971. 



17. E. Lemon, D. W. Stewart, and R. W. Shawcroft, The Sun's Work in a Cornfield, Science, 

 174: 371-378(1971). 



18. E. Hay, Smog, the Quiet Killer, Amer. Forests, 76: 16-19 (1970). 



19. L. S. Dochinger and C. E. Seliskar, Air Pollution and the Chlorotic Dwarf Disease of 

 Eastern White Pine, Forest Sci., 16: 46-55 (1970). 



20. A. G. Gordon and E. Gorham, Ecological Aspects of Air Pollution from an 

 Iron-Sintering Plant at Wawa, Ontario, Can. J. Bot., 41: 1063-1078 (1963). 



21. F. J. Pearson, Jr., and D. W. Fisher, Chemical Composition of Precipitation in the 

 Northeastern United States, U. S. Geological Survey, Water Supply Paper No. 1535-P, 

 1971. 



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

 (1972). 



23. N. M. Johnson, R. C. Reynolds, and G. E. Likens, Atmospheric Sulfur: Its Effect on the 

 Chemical Weathering of New England, Science, 177: 514-516 (1972). 



24. P. H. Abelson, Discovery and Evaluation of Resources, Science, 179: 431 (1973). 



