CONTENTS. 



PAGE. 



INTRODUCTION ,,..,., 17 



Protoplasm 7.7 



CHAPTER I. 



DEVELOPMENT 26 



The Cell 34 



CHAPTER II. 



TISSUES , 49 



Epithelial Tissue 49 



Supporting Tissue 64 



Connective Tissue 66 



Cartilage 74 



Bone 77 



Muscular Tissue 85 



Nervous Tissue 94 



CHAPTER III. 



CIRCULATORY SYSTEM, BLOOD, MARROW, AND LYMPHATIC ORGANS 108 



Heart 108 



Arteries and Veins 109 



Blood 1 16 



Marrow 121 



Lymphatic System 125 



Thymus Gland 129 



Spleen 132 



CHAPTER IV 



DIGESTIVE SYSTEM 136 



Mouth . . . .' 136 



Teeth 143 



Tongue. . . 172 



Pharynx 180 



Esophagus : 182 



Stomach 184 



Small Intestine 194 



Large Intestine 200 



