THE ZOOLOGICAL GARDENS. 13 



ling for health, the want of a fixed residence prevented 

 my prosecuting my experiments with suf&cient care 

 and perseverance to ensure full success ; besides 

 which my ultimate object was rather the study of 

 the habits of marine animals, to which end the Ma- 

 rine Aquarium was merely (or at least principally) 

 accessory. 



Finally, the complete success of the interesting ex- 

 hibition opened to the public last year at the Zoologi- 

 cal Gardens in the Eegent's Park adds its confirmation 

 to the practibility of the Marine Aquarium. At the 

 time that these sheets go to press, several of the 

 Tanks contain sea-water which has not been changed 

 for more than seven months ; and several of the ani- 

 mals survive, which were placed therein nearly a year 

 agq. The high health, liveliness, and fine condition 

 which they exhibit are patent to every visitor ; while 

 the botanist sees with great interest a luxuriant crop 

 of niarine plants which have grown in this state of 

 confinement. They are, I believe, exclusively, of the 

 Chlorospermatous Order ; Ulea, Enteromorpha, Con- 

 ferva, Bryopsis, &g. Of the last-named genus a pro- 

 fuse growth enveloping a stone in one of the central 

 Tanks forms an object of surpassing beauty. 



