TABLE OF CONTENTS 



PAGE 



I. GENERAL SURVEY OF THE FROG i 



A. Killing the Frog i 



B. External Anatomy of the Frog i 



C. The Buccal or Mouth Cavity .' 4 



D. Body Wall, Coelome, Mesenteries 5 



E. General Internal Structure 8 



II. GENERAL PHYSIOLOGY OF THE FROG 14 



A. Function of the Nervous System; Irritability, Conductivity . . . . 14 



B. Function of the Muscular System; Contractility 15 



C. Function of the Digestive System; Digestion, Absorption . . . . . 16 



D. Function of the Respiratory System; Respiration, Oxidation . . . . 18 



E. Function of the Excretory System; Excretion 19 



F. Function of the Circulatory System; Circulation of the Blood . . . . 20 



G. Function of the Reproductive System; Reproduction, Development, the 

 Life-Cycle 20 



H. Summary of Physiological Processes 23 



III. GENERAL HISTOLOGY: CELLS AND TISSUES 24 



A. Study of a Typical Cell . 25 



B. Studies of Tissues . 26 



IV. GENERAL HISTOLOGY: STRUCTURE OF ORGANS 33 



A. Structure of the Liver 33 



B. Structure of the Intestine 33 



C. Structure of the Stomach 35 



D. Structure of the Skin 36 



E. Structure of the Kidney 37 



F. Structure of the Spinal Cord 38 



V. THE SPECIAL ANATOMY OF THE FROG 39 



A. The Digestive System . 39 



B. The Urinogenital System 40 



C. The Respiratory System 41 



D. The Circulatory System: the Venous System 41 



E. The Circulatory System: the Arterial System 44 



F. The Circulatory System: the Structure of the Heart 45 



G. The Nervous System 46 



H. The Skeleton . 51 



I. The Muscular System . 55 



J. General Anatomical Principles 61 



VI. THE PROCESS OF CELL DIVISION 62 



A. Mitosis in the Eggs of Ascaris 62 



B. Mitosis in Plant Root Tips . 64 



C. Mitosis in the Eggs of the Whitefish 64 



