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CONTENTS. PREFACE
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LIST OF WOODCUTS.xi
CHAPTER I. The Natural History of the Common Crayfish
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CHAPTER II. The Physiology of the Common Crayfish. The Mechanism by WHicn the Parts of the Living Engine are supplied WITH THE MATERIALS NECESSARY FOR THEIR MAINTENANCE AND GROWTH.46
CHAPTER III. The Physiology of the Common Crayfish. The Mechanism BY WHICH THE LIVING ORGANISM ADJUSTS ITSELF TO SUR¬ ROUNDING CONDITIONS AND REPRODUCES ITSELF . . .87
CHAPTER IV. The Morphology of the Common Crayfish. The structure AND THE DEVELOPMENT OF THE INDIVIDUAL . . . .
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