OCEAN GAEDENS; 



and when they begin to exhibit spots of orange — a 

 vegetable plague-spot not to be mistaken — it is a 

 symptom of decay which should at once cause their 

 removal from the Aquarium, before their decompo- 

 sition leads to further mischief. 



The common Coralline, Corallina officinalis^ of 

 which a small spray is represented in the extreme 

 lower part of Plate Y., near the centre, is the 

 "arboret of jointed stone" alluded to by the poet, 

 and is well suited to Aquaria, thriving with little 

 trouble. The smaller and slenderer kind is also 

 suitable; but care must be taken, in collecting, 

 not to choose the detached white fragments, which 

 are washed up with every tide, for they are only 

 the skeletons of the plant. It is the rosy-tinted 

 specimens, verging to violet and purple, and still 

 attached to pieces of rock, that are alone fit to re- 

 move to the Aquarium. 



The Cladophorce are also stated to be very suit- 

 able, C, rupestris being a very useful plant for the 

 purpose. It is of a bluish-green, that harmonizes 

 well with the tone of the sea-water, and fills up 

 little chasms in the artificial rocks with very good 

 effect, especially in contrast with the reddish-purple 

 tufts of Folysiphonia arceolata^ which do well in an 

 Aquarium, and are a great aid to the foliage of the 



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