The fourth volume in this series consists of eleven chapters. The first five deal with more theoretical aspects of the kinetics and mechanisms of meta morphic reactions, and the next six consider the interdependence of defor mation and metamorphism. All papers deal with natural processes that inter act on various time scales and with different degrees of mass and heat transfer. Consequently, many fundamental axioms of metamorphic petrol ogy and structural geology are questioned both for their accuracy and their usefulness. In raising such questions, most contributors have pointed to ways in which the answers could be forthcoming from appropriate experi mental studies or observations on natural materials. In their discussion of how order/disorder can influence mineral assem blages, Carpenter and Putnis emphasize that metastable crystal growth is common in metamorphic systems and state' 'there may be some reluctance (among many earth scientists) to accept that significant departures from equilibrium could occur." On the basis of presented evidence, they question whether reactions ever occur close to an equilibrium boundary. The neces sity for pressure or temperature overstepping is also required by nucleation rate theory. In any case, the degree of order is severely influenced by these kinetic effects in igneous, sedimentary, and metamorphic environments."

From the reviews: ..".one of the charms of this book is that it is different from both structural geology text books and mechanics texts. Bayly has brought these two fields together admirably, with great intelligence, imagination and originality. For this reason alone, I think all active structural geologists, whether in research or teaching, and particularly those concerned with theory, should read this book."
(Journal of Structural Geology)

Persecution and the Christian are as inseparable as the cross and Christ. Yet, many Christians find it difficult to grapple with the history of persecution and martyrdom that has characterized the Church since her infancy. A selective reading of history might give the mistaken impression that each day brought the imminent threat of death or torture for members of the Early Church. On the other hand, some contemporary scholars treat persecution as a myth created by later generations. Thankfully, the scholarship of Herbert Workman dispels both these misconceptions. Workman draws on a wealth of primary and secondary sources, presenting a balanced picture of persecution from the days of the Apostles to the dawn of Christendom. But Workman is more than a scholar-he's a Christian, which means he leaves no room for the reader to approach persecution as a casual observer. He not only demonstrates what true faithfulness looked like in the past, but equips the reader to face the future with faith and courage.