Tree shrews are small-bodied, scansorial, squirrel-like mammals that occupy a wide range of arboreal, semi-arboreal, and forest floor niches in Southeast Asia and adjacent islands. Comparative aspects of tree shrew biology have been the subject of extensive investigations during the past two decades. These studies were initiated in part because of the widely accepted belief that tupaiids are primitive primates, and, as such, might provide valuable insight into the evolutionary origin of complex patterns of primate behavior, locomotion, neurobiology, and reproduction. During the same period, there has been a renewed interest in the methodology of phylogenetic reconstruction and in the use of data from a variety of biological disciplines to test or formulate hypotheses of evolutionary relationships. In particular, interest in the com­ parative and systematic biology of mammals has focused on analysis of phy­ logenetic relationships among Primates and a search for their closest relatives. Assessment of the possible primate affinities of tree shrews has comprised an important part of these studies, and a considerable amount of dental, cranio­ skeletal, neuroanatomical, reproductive, developmental, and molecular evi­ dence has been marshalled to either corroborate or refute hypotheses of a special tupaiid-primate relationship. These contrasting viewpoints have re­ sulted from differing interpretations of the basic data, as well as alternative approaches to the evolutionary analysis of data.

The mosses (Bryophatea, Musci) are a diverse and widely distributed group of land plants. Mosses are attractive experimental plants because they exhibit the traditional attributes of good model systems (Le. ease of growth & maintenance, fast generation time, and amenable genetics) with the added advantage of a haploid gametophyte that allowed developmental mutants to be recovered with relative ease. In addition, mosses with the ability to tolerate extreme environmental conditions offer realistic models for the analysis of environmental stress-tolerance; particularly when compared to tracheophytes such as Arabidopsis thaliana in which these important plant phenotypes are either not clearly expressed or entirely lacking. And, in one of the most exciting developments in Plant Biology, efficient homologous recombination occurs in the moss Physcomitrella patens.

It has been great fun to write this book, even though it has taken longer than planned, and occasionally been exasperating. The most difficult problem was deciding what to exclude among so many interesting things, because the available material usually exceeded the space. Because a book like this covers so many aspects, each component must be limited. This book is intended for graduate and undergraduate students as well as professional scientists who want to work with animal flight or to gain some insight into flight mechanics, aerodynamics, energetics, physiology, morpho­ logy, ecology and evolution. My aim has not been to give the whole mathe­ matical explanation of flight, but to provide an outline and summary of the main theories for the understanding of how aerofoils respond to an airflow. I also hope to give the reader some insight into how flight morphology and the various wing shapes have evolved and are adapted to different ecological niches and habitats.

From the Preface: The chapters of this book contain contributions from an international group of specialists. They address some important themes in both modern and ancient reef systems. Some chapters contain `snapshots' of reefs of particular intervals, while others touch on relevant themes of both modern and ancient reefs - themes that weave their way through reefs of all ages.

This book provides essential information on the morphology, biology, phytochemistry, pharmaceutical prospects, evolution, phylogeny, biogeography, and taxonomy of Paris (Melanthiaceae), a morphologically distinctive plant genus with great economic importance. Since the establishment of this genus, 70 species and 24 subspecific taxa have been described, resulting in considerable confusion in species delimitation.

The world today depends on oil, coal and gas (in that order of importance) for over 80% of its primary energy. From the time humans tamed fire, wood or bio-mass became the primary energy source. Coal took over from biomass during the Industrial Revolution and accounted for over 60% of world primary energy by the early 1900s.

This book provides essential information on the morphology, biology, phytochemistry, pharmaceutical prospects, evolution, phylogeny, biogeography, and taxonomy of Paris (Melanthiaceae), a morphologically distinctive plant genus with great economic importance. Since the establishment of this genus, 70 species and 24 subspecific taxa have been described, resulting in considerable confusion in species delimitation.

The reader first receives a comprehensive overview of the development and complex techniques of AI in an easy-to-understand presentation. Then, with a wink, all areas of application of AI are described in detail with the most current examples - critically evaluating, so that the reader may feel AI-firm. At the end of the book the author alerts the reader with imaginative future scenarios in an amusing way, what breathtaking perspectives are connected with AI in the sense of evolution.