CONTENTS. 



CHAPTER I. 



ON THE PLEASURES DERIVED FROM THE STUDY OP MARINE ZOOLOGY. 



Page 



Introduction Two classes of readers Marine zoology as an amusement 

 The botanist and his pleasures Entomological pursuits Hidden marvels 

 of nature The little Stickleback Conclusion, ... ... ... 17 



CHAPTER II. 



A GLANCE AT THE INVISIBLE WORLD. 



Microscopic studies When to use the microscope Modern martyrs of science 

 Infusoria Use of Infusoria Distinction between plants and animals 

 VorticellaRotaloria Wheel animalcules Mooring Thread of Vorticellse 

 A compound species of Vorticella described Zoothamnium spirale of 

 Mr. Gosse Nature's scavengers, ... ... ... ... ... 27 



CHAPTER III. 



SEA ANEMONES. 



Animal-flowers A. mesembryantfiemum ' Granny,' Sir J. DalyelTs cele- 

 brated anemone Original anecdote A. troglodytes How to capture acti- 

 niaeA roving 'mess.' An intelligent anemone Diet of the actiniae- 

 Voracity of these zoophytes Defence of certain species Actiniae eating 

 crabs Their reproductive powers Size of the 'crass.' The Plumose 

 anemone Its powers of contraction, 



