The Name and the Object—Philosophy of the Aquarium.

Rectangular Tanks—Construction of Tanks—Warington's Stope-back Tank—Bell Glasses and Vases—Stands for Vases.

The Bottom—Mould—Planting—The Water—Aspect.

How to stock a Tank quickly—Selection of Plants—Water Soldier—Starwort—Vallisneria—Anacharis—Myriophyllum—Potamogeton—Nuphar Lutea—Pipewort—Utricularia—Isopelis—Subularia—Ranunculus—Hydrocaris—Alisma—Lemna, &c.

Cyprinus Carpio, Gibelio, Carassius, Auratus, Brama, Leucisus, Rutilus, Alburnus, Phoxinus, Gobio, Tinca, Barbus, Barbatula, Cephalus—Percidæ—Gasterosteus.

Feeding—Confervæ—Uses of Mollusks—Objections to Mollusks—Use of Confervoid Growths—Periodical Cleansing—Exhaustion of Oxygen—Temperature—Dead Specimens—Disease of Fishes.

Points in which the Marine differs from the River Tank—Stained Glass.

The Bottom—Rocks, Arches, and Caves—The Water—Artificial Sea Water—Marine Salts—Management of Artificial Water—Caution to the Uninitiated—Filtering.

Fishes—Mollusks—Annelides—Zoophytes—Actinia Mesembryanthemum—Anguicoma, Bellis, Gemmacea, Crassicornis, Parasitica, Dianthus, &c.

Grouping of Objects—Sulphuretted Hydrogen—Preservation of the Water—Aeration—Filter—Decay of Plants—Death of Anemones—Removal of Objects—Density of the Water—Green Stain—Feeding—The Syphon—Purchase of Specimens.

Distinctions between the Cabinet and the Aquarium—Construction of a Cabinet—Glasses.

Implements for Collecting—Nets, Jars, and