CONTENTS. XV 



CHAPTER XI. 



Practical Instructions — The !N'ame — Vivarium — A qua- vivarium — 

 Aquarium — The Tank — Form, Size, and Materials — Covering — 

 Aspect — The Preparation — Artificial Rocks, &c. — The Bottom — 

 — Water — Artificial Sea-water — The Stock— Plants — Animals — 

 Procuring Specimens — ^Transmission — Cultivation of Red Algse — 

 Propagation of Animals — General Directions — Purification — 

 Occasional Death — ^Instruments — Artificial Aeration — Evaporation 

 — Cleansing the Sides — Turbidity — Instructions for Collecting 

 — Time — Implements — Collecting Sea -weeds — Animals — 

 Dredging — Trawling — Towing — Conclusion . . . 249 — 302 



Index 303 



