Written by world experts in astacology, this book covers a range of aspects of the biology and ecology of freshwater crayfish. With a strong focus on wild crayfish, the book studies the taxonomy and genetics of this interesting group of animals. Under examination also are crayfish growth and reproduction, with detailed illustrations; behavior and c

"In writing this book about Crayfishes it has not been my intention to compose a zoological monograph on that group of animals ... I have desired, in fact, to show how the careful study of one of the commonest and most insignificant of animals, leads us, step by step, from every-day knowledge to the widest generalizations and most difficult problems of zoology; and indeed, of biological science in general."--The Preface

Of all the inventions of the nineteenth century, the scientist is one of the most striking. In revolutionary France the science student, taught by men active in research, was born; and a generation later, the graduate student doing a PhD emerged in Germany. In 1833 the word 'scientist' was coined; forty years later science (increasingly specialised) was a becoming a profession. Men of science rivalled clerics and critics as sages; they were honoured as national treasures, and buried in state funerals. Their new ideas invigorated the life of the mind. Peripatetic congresses, great exhibitions, museums, technical colleges and laboratories blossomed; and new industries based on chemistry and electricity brought prosperity and power, economic and military. Eighteenth-century steam engines preceded understanding of the physics underlying them; but electric telegraphs and motors were applied science, based upon painstaking interpretation of nature. The ideas, discoveries and inventions of scientists transformed the world: lives were longer and healthier, cities and empires grew, societies became urban rather than agrarian, the local became global. And by the opening years of the twentieth century, science was spreading beyond Europe and North America, and women were beginning to be visible in the ranks of scientists. Bringing together the people, events, and discoveries of this exciting period into a lively narrative, this book will be essential reading both for students of the history of science and for anyone interested in the foundations of the world as we know it today.