CON T E N T S 



CHAPTER J. 



THE PRINCIPLES OF THE AQ0ARIDM. 



The Principles of the Aquarium not a New Discovery— Mr. 'Warrington, Inventor of 

 the Aquarium — Tanks of the Zoological Society of London — Practice necessary in 

 the Management of Aquaria— Fish-globes — Animals inhale Oxygen and exhale 

 Carbonic Acid Gas — The " Black-hole " of Calcutta— Use of Plants in Nature — Use 

 of Snails in an Aquarium, 13 



CHAPTER II. 

 VESSELS FOB AQUARIA. 



Form of Vessel— Dimensions — Quantity of Stock to be introduced— Minnows attack 

 Hermit-crabs— Overstocking— Balance of Nature— Materials for Tanks — Wood — 

 Zinc— Iron — The bottom of the Vessel — Proportions— Octagon Tank— Circular 

 Form— The Beginner's Tank— Breeding Jars— Covering the Tank— Ground Glass — 

 Rock-poota— Mr. Warrington's Tank— Cement, 22 



CHAPTER III. 



l'REJ'ARINii THE TANK. 



Seasoning the Tank- The Bottom or Soil— Silver-sand not to be recommended — 

 Pebbles— Kind of Soil used important — The Amateur not always to be governed 

 by Books— Shell and Coral Bottoms — Uoekwork— Cement for uniting Uockwork— 

 Rockworic to be simply formed— Aspect— Kast aspect best — Morning sun bene- 

 ficial-Some Fish can bear warmer Water than others— A Northern Aspect never 

 favorable -Danger of letting the Water freeze — Minnows beneath Ice— Marine 

 Aquaria not needing much Light a mistake — Mr. Warrington's Tank— Water to 

 be introduced carefully, 80 



CHAPTER IV. 



THE FRESH-WATER AQUARIUM. 



Marine ami Fresh-water Aquaria compared— A Fresh-water Aquarium to be recom- 

 mended to a Beginner — The Reasons why — Fresh-water Animals and Plants easily 



