Appendixes: A. Perturbations Of The Stratosphere And Ozone Depletion / Ralph J. Cicerone -- B. Stratospheric Perturbations -- The Role Of Dynamics, Transport, And Climate Change / Robert E. Dickinson -- C. Recent Developments In Stratospheric Photochemistry / Steven C. Wofsy And Jennifer A. Logan -- D. The Measurement Of Trace Reactive Species In The Stratosphere / J.g. Anderson -- E. Trend Analysis Of Total Ozone / Hans A. Panofsky -- F. Detection Of Trends In The Vertical Distribution Of Ozone / A. Barrie Pittock -- G. The Association Of Dna Damage With Cancer-initiating Events -- H. Participants In The Workshop Of Biological Effects Of Increased Solar Ultraviolet Radiation -- I. Biographical Sketches Of Committee Members And Consultants. Prepared By The Committee On Chemistry And Physics Of Ozone Depletion And The Committee On Biological Effects Of Increased Solar Ultraviolet Radiation, Environmental Studies Board, Commission On Natural Resources, National Research Council. Appendixes: A. Perturbations Of The Stratosphere And Ozone Depletion / Ralph J. Cicerone -- B. Stratospheric Perturbations--the Role Of Dynamics, Transport, And Climate Change / Robert E. Dickinson -- C. Recent Developments In Stratospheric Photochemistry / Steven C. Wofsy And Jennifer A. Logan -- D. The Measurement Of Trace Reactive Species In The Stratosphere / J.g. Anderson -- E. Trend Analysis Of Total Ozone / Hans A. Panofsky -- F. Detection Of Trends In The Vertical Distribution Of Ozone / A. Barrie Pittock -- G. The Association Of Dna Damage With Cancer-initiating Events -- H. Participants In The Workshop Of Biological Effects Of Increased Solar Ultraviolet Radiation -- I. Biographical Sketches Of Committee Members And Consultants. Includes Bibliographies.