TABLE OF CONTENTS. 



PAGE 



INTRODUCTION x 



HISTORY OF ZOOLOGY 7 



DEVELOPMENT OF SYSTEMATIC ZOOLOGY 8 



DEVELOPMENT OF MORPHOLOGY 12 



REFORM OF THE SYSTEM !8 



HISTORY OF THE THEORY OF EVOLUTION 19 



DARWIN'S THEORY OF THE ORIGIN OF SPECIES 25 



GENERAL MORPHOLOGY AND PHYSIOLOGY 57 



GENERAL ANATOMY 58 



The Morphological Units of the Animal Body 58 



The Tissues of the Animal Body 71 



Epithelial Tissues 73 



Connective Tissues. 83 



Muscular Tissues 90 



Nervous Tissues 94 



Summary 97 



The Combination of Tissues into Organs 99 



Vegetative Organs 102 



Organs of Assimilation 102 



Digestive Tract 103 



Respiratory Organs 107 



Circulatory Apparatus 109 



Excretory Organs 115 



Sexual Organs 117 



Animal Organs 121 



Organs of Locomotion 121 



Nervous System 122 



Sense Organs 125 



Summary 131 



Promorphology 133 



GENERAL EMBRYOLOGY 139 



Spontaneous Generation 139 



Generation by Parents 140 



Asexual Reproduction 140 



Sexual Reproduction 142 



Combined Methods of Reproduction 143 



General Phenomena of Sexual Reproduction 145 



Maturation of the Egg 146 



Fertilization 148 



V 



