AQUARIA. 407 



sea-weeds are well adapted to ensure success, and effect a 

 perfect aeration of the water. They grow slowly, and 

 prefer still waters. Any of the following weeds, or all, if 

 variety is desirable, answer the purpose : Griffithsia setacea, 

 Wrangilia multifida, Dasya coccinea, Chylocladia ovalis; 

 with roots already attached to rock or debris of some sort. 

 Introduce by slow degrees varieties of Actinice, Annelida, 

 Madriporida, and other Polyzoa, with a Nudibranch or 

 two ; but do not overstock the tank with either animal 

 or vegetable life ; and keep all scrupulously clean, by re- 

 moving decayed matter, vegetable or animal. Do not ex- 

 pose the tank to a strong light, or keep it in a warm place : 

 a north-eastern aspect is the best. If such precautions are 

 attended to, all will flourish, without the syringing, or 

 other meddlesome and tiresome proceedings often recom- 

 mended. The best scavenger for the removal of dead 

 animal matter, is a fine active Prawn ; he peeps and prys 

 into every hole and corner for food; and for keeping 

 down the confervce, which grows on the sides of the tank, 

 a Nudibranch (Deudronotus arborescens, or Doto coronata) ; 

 and if the latter cannot be obtained, one of the species of 

 Sea- snails, whose organization is adapted for crawling over 

 rocks and feeding on sea-plants, Purpura lapillus, or Nau- 

 tica monilifera, will be found to be an exceedingly useful 

 addition to the Aquarium. Make a careful selection of 

 animals, and if obliged to purchase, visit Mr. Lloyd, in 

 the Portland Road, Kegent's Park, whose experience in 

 their management, and large daily supplies, enables him 

 to give satisfaction to all his patrons. 



The south coast of the Isle of Wight furnishes the whole 

 of the animals represented in our Frontispiece, with many 

 more very beautiful Actiniae and Algce. A short stay at 

 that lovely spot, Freshwater Bay, will amply repay the 

 naturalist; the bold rocks around this place abound in 

 choice specimens. 



Mr. N. B. Ward, whose charming fern-cases have become 

 universal favourites, made the earliest attempt to establish, 

 on a small scale, an "aquarium for fish and plants" He 

 writes i 1 " I placed ten or twelve gold and silver fish, in 



(1) On the Growth of Plants in closely-glazed eases, by N. B. Ward, Esq. 

 F.R.S. 



