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The growing concern about where energy rich chemicals for the future will come from has stimulated a resurgence of interest in the potentialities of microbial fermentations to assist in meeting anti cipated demands for fuels and chemicals.

Approaching any task on aging brings a flood of images that are a personal repetition of what has been one of the greatest and most persistent concerns of mankind. The ultimate clues must lie there-with one serious complication: There are numerous cell types in any body and each cell type is a very complex machine of its own.

In modem organizations, data has been added to the classical economic assets of land, labor, and capital. Data on company products, finances, and operations are gathered into data bases that are used to support management reporting and decision making. The exercise of these management functions is called data base administration (DBA).

The research studies reported in this book were completed between June, 1976 and November, 1979, with a USPHS research grant (MH- 27849) from the Center for Studies of Crime and Delinquency, National Institute of Mental Health.

This book originated in the Workshop on "Hadronic Matter at Extreme Energy Density," held at the Ettore Majorana Center in Erice, October 13-21, 1978. It was progress in the knowledge of symmetries in particle physics that fueled the advance toward the present formulation of supergravity, thus help ing to heal this historical separation.

This book, the third volume in the series, continues to explore the application of chemistry to our understanding of the functioning of the human in health and disease. The text is written with the intent to serve in the training of clinical chemists, clinical pathologists, and medical students in clinical biochemistry.

The Infant Primate Research Laboratory at the University of Washington was conceived in 1970 as a small research Wlit primarily for support of two individual's interests in early develop ment of nonhuman primates.

The simple fact that the authors were able to give injectable heroin to volunteers for addictive self-administration at a Harvard facility may elude the notice it deserves.

This volume represents a collection of papers which were contributed by participants at a Symposium for Cholinergic Mechanisms and Psycho pharmacology, held in La Jolla, California on March 28-30, 1977.

This volume is based on papers presented at a Workshop on the Neuropsychology of Aggression held at Newport Beach, California in March 1974.

The problems of the classification of rocks, particularly igneous rocks, and of the nature and genesis of ores are obviously chemical and, by the mid- 19th century, chemistry was in a state where rocks could be effectively analyzed, and a classification built up depending partly on chemistry and partly on the optical study of thin specimens.

This book is an attempt to bridge the gap between present design practices and available analytical techni ques (which may be exploited to improve present procedures).

This, in miniature, is the tragedy of scientific research to-day: desire for credit causes research to be published in little bulletins, notes and preliminary communications, so that only those intimately involved in the field really know what is happening (and even they may well not see the forest for the trees).

I was very happy to learn that Plenum Press has decided to publish an English edition of Chemistry of the Ionosphere. I will be pleased if publication of the book in English will as sist in removing some of the currently existing ambiguities in basic problems of upper atmosphere chemistry.

With the evolution of digital techniques for information processing, storage, and transmission, the need arises for digital representation of visual information, that is, the representation of images by a sequence of integer numbers (usually binary).

Prior and subsequentto the publication of the third edition of the Diagnos tic and Statistical Manual of Mental Disorders (DSM-III), we have witnessed a considerable upsurge in the quantity and quality of research concerned with the psychiatric diagnostic process.

This volume arose out of the symposium: "The Basal Ganglia: Structure and Function," held at the beginning of September 1983 as a satellite of the 29th International Congress of Physiological Sciences.

Studies of simple and emerging systems have been undertaken to un derstand the processes by which a developing system unfolds, and to understand more completely the basis of the complexity of the fully formed structures.

Since the appearance of the first two volumes of Modern Fluorescence Spectroscopy in 1976, important advances continue to be made in both the techniques and applications of molecular luminescence.

The countries represented at the School were: Argentina, Australia, Austria, Belgium, Canada, Federal Republic of Germany, France, Hungary, India, Italy, Japan, Korea, the Netherlands, Nor way, Poland, Rumania, Spain, Sweden, the United Kingdom, the United States of America, and Yugoslavia.

The XI INTERNATIONAL CONGRESS OF NUTRITION - XI ICN - pro moted by the INTERNATIONAL UNION OF NUTRITIONAL SCIENCES - IUNS -, and organized by the BRAZILIAN NUTRITION SOCIETY - BNS - was held in the Convention Center of the Hotel Nacional, in the city of Rio de Janeiro, Brazil, from August 27th to September 1st, 1978.

As part of our comprehensive series on modern immunobiology which aims to digest this progress, we believe it is appropriate to devote an entire volume to the fundamental principles, new knowledge, and clinical lore on which the modern practice of allergy must be based.

During the past two decades, research on animal, plant, and microbial toxins has expanded rapidly, and new and exciting information has appeared to clarify both the clinical and therapeutic aspects of intoxication and, even more impor tant, to help us understand more exactly the structure and the mode of action of toxins on a molecular basis.