THE AaUARIUM. 



443 



The woodcut (Fig; 228) represents a mariae aquarium dcsip:ned by 

 Mr. Gosse, with a small tbimtain iu the centre, which not only adds to its 

 oraamental appearance, hut serves to aerate the water, or mix with it a 

 greater amount of \ht fixed air which gill-breathing creatures respire.* An 



Fig. 22c!. 



aquarium of this shape combines the advantage of a large surface exposed lo 

 the air, with the opportunity of watching its inhabitants through the glass 

 sides. The form of aquarium best suited for aquatic animals, viz. a wide 



* Tlieuseof the woodcut for this work, was kindly afforded at our request, by 

 Mr. Gosse. 



