CONTENTS. 



GENERAL INTRODUCTION. 



PAGE 



Definition of Biology and Zoology Differences between organic and 

 inorganic matter Differences between dead and living bodies 

 Nature and conditions of life Vital force Differences between 

 animals and plants Morphology and physiology Differences 

 between different animals Specialisation of functions Morpho- 

 logical type Von Baer's law of development Homology, 

 analogy, and homomorphism Correlation of growth Classifi- 

 cation Definition of species Impossibility of a linear classifica- 

 tion Reproduction Sexual reproduction Non-sexual repro- 

 ductionGemmation and fission Reproduction by internal 

 gemmation Alternation of generations Parthenogenesis De- 

 velopment, transformation, and metamorphosis Spontaneous 

 generation Origin of species Distribution, geographical and 

 geological, .......... 1-55 



^CHAPTER I. 



General characters of the Protozoa Classification of the Protozoa 



Gregarinidae Psorospermiae, .. . . . . . 56-60 



CHAPTER II. 



General characters of the Rhizopoda Monera Amcebsa, . . 61-66 



CHAPTER III. 



Foraminifera Classification of the Foraminifera Affinities of the 

 Foraminifera Distribution of Foraminifera in space Distribu- 

 tion of Foraminifera in Time, ...... 66-77 



CHAPTER IV. 



Radiolaria Acanthometrse Polycystina -- Thalassicollida 



Heliozoa, . . . . . ... . . 77-83 



CHAPTER V. 



Sponges Nature of Sponges Chief groups of Spongida Distribu- 

 tion of Sponges in space and in time Affinities of Sponges, . 83-94 



