viii CONTENTS. 



aeration Mr. Gosse's artificial sea-salts Hanover and 

 Berlin Aquaria Aquaria in British and continental towns 

 Havre Aquarium Aquarium of the French Acclimatisa- 

 tion Society Naturalists at British aquaria The Crystal 

 Palace Aquarium History and structure of ditto Ditto of 

 Brighton Aquarium Dr. Dohrn's aquarium at Naples 

 Professor ..Agassiz's aquarium at Penekese Island The 

 Manchester Aquarium' Southport ditto Yarmouth ditto 

 Westminster ditto Aquaria in course of erection Page 10 



CHAPTER III. 



PRINCIPLES OF THE AQUARIUM. 



Pleasures and educational influence of aquarium keeping 

 Cruelty to animals Streamless aquaria Relation of 

 animal to vegetable life Balance of ditto Parasitic fungi 

 on aquarium animals Lloyd's contributions to literature 

 of aquaria Over-stocking aquaria How to proceed in 

 stocking an aquarium Bell-glasses and their uses De- 

 velopment of green algae in aquaria How to arrest ditto 

 How to keep down ditto Temperature of ditto Water in 

 aquaria not to be changed Aquarium fountain Aquatic 

 plants Structure of cheap fountain Evaporation of water 

 in aquaria Dust in ditto How to remove it 24 



CHAPTER IV. 



CONSTRUCTION OF FRESH-WATER AQUARIA. 



Where materials can be purchased Details of cheap aquarium 

 Bell-glasses Dr. Lankester's ' Aquavivarium ' Flower- 

 stand with bell-glass aquarium Oblong tank for window 

 aquaria Polygonal tanks Cement for joining sides of 

 tanks Rockwork of tanks Materials for rockwork 

 Fresh-water plants for tanks Duckweeds Mud and sand 

 for fresh-water aquaria Deddorisation of aquaria How 

 to prepare aquatic plants for aquaria Stock animals for 



