Vlll EVENINGS AT THE MICROSCOPE. 



PAGE 



CHAPTER X. 

 Insects : their Ears and Eyes 158 



CHAPTER XL 

 Crabs and Shrimps 171 



CHAPTER XII. 

 Barnacles • 191 



CHAPTER XIII. 

 Spiders and Mites 203 



CHAPTER XIV. 

 Wheel-bearers . 223 



CHAPTER XV. 

 Worms. 258 



CHAPTER XVI. 

 Sea-urchins and Sea-cucumbers 276 



CHAPTER XVII. 

 Jelly-fishes 307 



CHAPTER XVIH. 

 Zoophytes .... 325 



CHAPTER XIX. 

 Sea- Anemones : their Weapons 355 



CHAPTER XX. 

 Protozoa and Sponges 376 



CHAPTER XXI 

 Infusoria 389 



