CONTENTS 



PAGE 



Introduction 1 



External Aspect of the Rat 4 



The Skeletal System 6 



The Muscular System 38 



The Salivary Glands 48 



The Vascular System 50, 66, 97 



The Respiratory System 63 



The Digestive System 68 



The Urogenital System 84 



The Nervous System 103 



Index 117 



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