Informal discussions in 1977 among a number of scientists asso­ ciated with solar and interplanetary physics revealed a need for a dialogue between the two often-divergent groups. It was clear that the latter group was dependent essentially on the sun for its raison d'etre. On the other hand it was also clear that the former group could benefit in its search for insight vis-a-vis solar activity by looking beyond the shell of the inner corona. Needless to add that the combined solar/interplanetary topic is relevant to astrophysics when one considers stellar winds and binary star flows. It was felt, there­ fore, that a symposium was essential to bring together, for the first time, leading solar and interplanetary physicists from the interna­ tional community to discuss and record herein their own research. The fundamental physical processes underlying our own capricious star's activity can be understood only by the coupling of solar and interplan­ etary topics in an intimate observational and theoretical structure. This book, intended for active research scientists and advanced grad­ uate students, is an important step in this direction. The background of solar and interplanetary dynamics is provided in Part I (The Life History of Coronal Structures and Fields) and Part II (Coronal and Interplanetary Responses to Long Time Scale Phenomena).

I. The Life History of Coronal Structures and Fields.- II. Coronal and Interplanetary Responses to Long Time Scale Phenomena.- III. Solar Transient Phenomena Affecting the Corona and Interplanetary Medium: Dynamics Deduced from Observations.- IV. Solar Transient Phenomena Affecting the Corona and Interplanetary Medium: - Theoretical Considerations.- V. Coronal and Interplanetary Responses to Short Time Scale Phenomena: - Observations.- VI. Coronal and Interplanetary Responses to Short Time Scale Phenomena: - Theoretical Considerations.- VII. Future Directions.- VIII. Summary of Symposium No. 91.