96 



THE FAMILY AQUARIUM. 



transparent fronds. The Rhodyraenias are not much to be 

 recommended for the Aquaria. They are pleasmg, but 

 too uncertain. 



The Rytijphma pinastris is a brown-fronded plant, and 

 wins its title on account of its pine-like formation and 

 growth. 



The Taonia atomaria grows like a bunch of fasces, of a 

 brownish-green hue. 



The TJlva latissima^ or Sea Lettuce, grows everywhere, 

 almost, on the coast, and is one of the best sea weeds for 

 a tank in the entire category. It prospers in that species 

 of confinement as well as in its home in the ocean, and 

 throws off oxygen continually and in great abundance, for 

 the support of the animal life around it. The green weeds, 

 as a general rule, are less precarious than the red ones, 

 and hence ought always to be preferred by the amateur ; 

 but the Ulva is most to be preferred of all. Its broad 

 leaves, of brilliant green^ are familiar to nearly every eye. 

 They are thin as silver paper, all puckered up and folded 

 at the rim, and usually torn and chafed away at the 

 edges. It is to be found in the hollows of the rock?, be- 

 tween tide-water marks, luxuriating almost to the level of 

 high water. 



The Vauckeria submarina is a graceful light green, and 

 not unattractive plant. 



The Zonaria parvula is a small brown plant of the 

 pebble-hugging species. 



The Cladojphorce rupestris does well in a tank, and fills 



