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Polycyclic hydrocarbons are of interest in many fields of science: theoretical chemistry, physical chemistry, organic chemistry, dyestuff chemistry and biology. With regard to the latter, I am indebted to Dr. Regina Schoental of the Medical Research Council for the review in this present work of carcinogenesis by polycyclic hydrocarbons. This book is designed to present the facts in a simple and clear order and to derive empirical rules from them, but it does not present a com prehensive theory about polycyclic hydrocarbons. An attempt is made instead to extend classical symbolism into modern structural chemistry. Thus extensive use is made of Robinson's aromatic sextet, which is applied in an uncompromising and strict way. This quasi-classical attempt is encouraged further by such completely unexpected dis coveries as those of Dewar benzene and of the electronic asymmetry of formally symmetric hydrocarbons. How difficult it is to break away from any established way of thinking has been admirably expressed by Kekule ("Organische Chemie", 1861, Part 1, page 4, translated from the German): "All our ideas are based, to an extent much greater than we ordinarily believe, on those of our predecessors. Our accumulated experience, the notions of which our training has accustomed us to, of whatever kind they have been, influence the course of our thoughts far more than we are willing to admit; only too frequently the following of our regularly used, well trodden way of thinking leads us to overlook the simplest of correlations.

The clarinet has a long and rich history as a solo, orchestral, and chamber musical instrument. In this broad-ranging account Eric Hoeprich, a performer, teacher, and expert on historical clarinets, explores its development, repertoire, and performance history. Looking at the antecedents of the clarinet, as well as such related instruments as the chalumeau, basset horn, alto clarinet, and bass clarinet, Hoeprich explains the use and development of the instrument in the Baroque age. The period from the late 1700s to Beethoven's early years is shown to have fostered ever wider distribution and use of the instrument, and a repertoire of increasing richness. The first half of the nineteenth century, a golden age for the clarinet, brought innovation in construction and great virtuosity in performance, while the following century and a half produced a surge in new works from many composers. The author also devotes a chapter to the role of the clarinet in bands, folk music, and jazz.

For all of fur's contentious position in American culture today, historian Eric Jay Dolin shows its centrality in our nation's ever-surprising history. He argues that the trade in animal skins turned colonial America into a tumultuous frontier where global powers battled for control. From the seventeenth century right on up to the Gilded Age, the developed world's appetite for fur made the new continent, with its wealth of fur-bearing wildlife, a seemingly inexhaustible resource. The result was a major boost in the evolution of the colonies into a powerful new player on the world stage. Dolin sheds insight on the ways the fur trade created international tensions--in New England, the Great Lakes, and in the expanding West. Fur traders were often the first white men to map major rivers, forests, and mountains, then soon pushed Native Americans off their lands as John Jacob Astor's American Fur Company attempted to monopolize the West.--From publisher description.

'The Cambridge Companion to the Bible' is unique in that it provides, in a single volume, in-depth information about the changing historical, social and cultural contexts in which the biblical writers and their original readers lived.

The clarinet has a long and rich history as a solo, orchestral, and chamber musical instrument. In this broad-ranging account Eric Hoeprich, a performer, teacher, and expert on historical clarinets, explores its development, repertoire, and performance history. Looking at the antecedents of the clarinet, as well as such related instruments as the chalumeau, basset horn, alto clarinet, and bass clarinet, Hoeprich explains the use and development of the instrument in the Baroque age. The period from the late 1700s to Beethoven's early years is shown to have fostered ever wider distribution and use of the instrument, and a repertoire of increasing richness. The first half of the nineteenth century, a golden age for the clarinet, brought innovation in construction and great virtuosity in performance, while the following century and a half produced a surge in new works from many composers. The author also devotes a chapter to the role of the clarinet in bands, folk music, and jazz.

The second edition of Eric S. Rabkin's study of the life and work of Arthur C. Clarke.

Have you ever wondered: -What happiness is and how to increase yours? -What love is and how to get more of it? -What motivates us, or what motivation even is? -What influences our interactions and relationships and how we can improve their quality? -Where misunderstanding comes from and how to alleviate it? -If there's a way to eliminate tyranny, whether by leadership or the majority, so that everyone in a society or institution can influence policies that affect them? -What a system is and why we should care? -How to reduce or eliminate bias? Whether there is an objective good and, if so, how we can determine it? -What truth is and whether we can know it? -What the difference is between information, knowledge, understanding, and wisdom, and why we should care? -Where sentience comes from? Intelligence? Self-awareness? -Why we feel and machines don't, or for that matter, what feeling even is? -Where choice and free will come from, or what they really are? -What self-discipline is, how to increase it, and why some people seem to have more of it than others? -Why we exist and what the purpose of our lives might be? -If God exists, is intelligent, and/or loving and if so, why there's so much destruction and suffering in the world? -Whether animals have a soul, or for that matter, people? -Why we have so many seemingly unsolvable problems? This book offers answers to these questions and many others. It then integrates them into a new way of looking at the world; a new paradigm that can show us how to conquer many of the problems we face today. But that's just the beginning...