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The phenomenon of sound transmissions through marine sediments is of extreme interest to both the United States civilian and Navy research communities.

The user of this valuable compilation owes a debt of gratitude to that Society, to the Diamond Alkali Company which donated countless hours of Mr. Lefond's time, and above all, to author Stanley Lefond.

Although complete coverage of the subject was not attempted, the six chapters cover all the major types of cell motility systems and the authors provide in depth reviews of gliding motility, chloroplast movements, cytoplasmic streaming, flagellar beat pat terns, mechanisms of flagellar movement and centrin-mediated cell motility.

This book is based on the papers presented at the conference on "Mecha nisms of DNA Damage and Repair: Implications for Carcinogenesis and Risk Assessment," held at the National Bureau of Standards on June 2-7, 1985, This volume deals with mechanisms of DNA damage and repair at the molecular level;

The papers (from the Third Delaware Symposium on Language Studies) address the question of literacy---a linguistic problem too important to be left only to linguists--but many of the authors are not linguists at all, and those who are linguists have taken the care to see beyond the parochialism of a single discipline.

As social and eco nomic change accelerates at an ever-increasing rate, we look with awe and wonder at the way in which unanticipated events impact on our lives and change the way we live. The President's Committee on Mental Retardation is proud of its deci sion to look at the year 2000 and its impact on the mentally retarded.

Our present concepts ofthe regulation of enzyme activity in the cell have been largely based on the extensive body of work which has been carried out with micro-organisms.

This book has two special features: First, it contains generalizations of continuous maps on topological spaces, e. , almost continuous maps, nearly continuous maps, maps with closed graph, graphically continuous maps, w-continuous maps, and a-continuous maps, etc.

Classically, the predicates and variables of the predicate calculus are kept distinct, inasmuch as no variable is also a predicate; moreover, each predicate is assigned an order, a unique natural number that indicates the length of each tuple to which the predicate can be prefixed.

Recently there has been growing interest in the physical properties of rocks. v vi FOREWORD At present, while research into the mechanical properties of rocks (relating to the problems of geophysics, geochemistry, geology, and mining) is pressing forward on a wide front, much less work is being done with electrical properties.

This text is designed to acquaint the reader with the commonly used procedures of juice and wine analysis as they are generally practiced in the industry, and as they are taught in the Department of Enology at California State University, Fresno. The process of making wine involves a series of concerns for the winemaker and staff of a winery.

While this volume is based on an earlier work, An Anatomy of Speech Notions (1976), the overall orientation of the present volume is distinctive enough to make it a new work.

Apart from revealing a general lack of appreciation of many important aspects of the chemical properties of poly adenylic acid, the literature also shows that there is a great gulf between those who study the biological role of polyadenylic acid.

From the President of the Research Society on Alcoholism Alcohol research has entered an era of growth which brings enhanced opti mism regarding the elucidation of the biochemical and psychosocial factors which combine to produce the phenomena of alcohol abuse and alcoholism.

Over the last decade the world has experienced a growing interest in problems associated with the nonmedical use of drugs. As a result, the amount of research and writing on the subject of drug problems has greatly increased, and it has become very difficult for one individual to keep up with all the relevant literature.

The first two volumes of this series addressed themselves to the chemistry, physiology, and metabolism of the bile acids. The pathophysiological implications of bile acids at the macromolecular level is highlighted by a chapter on the influence of bile salts on the activity of various enzymes.

This volume is devoted principally to the theme of behavioral develop ment. Although the ex cluded middle is familiar enough in academic argument, the dynamic tensions actually present in developing systems may be particularly prone to polarize debate about what is actually happening.

Every pioneer takes large risks, hoping that the new frontier he seeks will provide the benefits of independence and good fortune.

Rapid progress in analytical methods, within the past few decades, has led to the widespread applications of newer immunological and radioimmunoassay techniques to the diagnosis and treatment of hemorrhagic and thrombotic disorders.

The science of nutrition has advanced beyond expectation since Antoine La voisier as early as the 18th century showed that oxygen was necessary to change nutrients in foods to compounds which would become a part of the human body.

The International Workshop on human lactation dedicated specifically to the topic of Maternal and Environmental Effects on Lactation repre sents the recent progress of research in human lactation.

This volume is a compilation of the papers presented at a meeting that took place in April 1980 at the Mote Marine Laboratory, Sarasota, Florida.

These volumes, 7 and 8, of Fracture Mechanics of Ceramics constitute the proceedings of an international symposium on the fracture mechanics of ceramic materials held at Virginia Polytechnic Institute and State University, Blacksburg, Virginia on June 19, 20 and 21, 1985.

Evolutionary Biology, of which this is the eighteenth volume, con tinues to offer its readers a wide range of original articles, reviews, and commentaries on evolution, in the bro~dest sense of that term. Hecht, Department of Biology, Queens College of the City University of New York, Flushing, New York 11367;

This book is the second volume in the series "Current Issues in Clinical Psychology", which is designed to build into a composite text of the field of clinical psychology.

This volume represents the proceedings of a two-day international meeting on chiral chromatography held at the University of Surrey between 3-4 September 1987.