OR, GLIMPSES BENEATH THE WATERS. 



separate tank. But, after all, the impossibility of 

 providing a su£B.cient supply of oxygen was evi- 

 dently the great and principal cause of failure. 

 The Univalves and smaller Crustacea disappeared 

 first, a disagreeable smell giving intimation that 

 decay was going on, the creatures that had 

 perished having, many of them, died in conceal- 

 ment, under the stones, weeds, &c., at the bottom of 

 the Aquarium. The first signs of unpleasant efl3.uvia 

 rising from the tank must, therefore, be carefully 

 attended to; and, in such cases, the Aquarium 

 ought to be immediately searched for the cause ; 

 which, when discovered, should be immediately 

 removed. 



Mr. Gosse having taken out the whole of the 

 specimens, dead and alive, and carefully cleansed the 

 tank, a much smaller number was put in, which, 

 being well selected, and having suflB.cient space, 

 throve abundantly well ; and the ingenious experi- 

 mentalist was at last amply rewarded for all his 

 persevering exertions. . This result benefited others 

 as well as himself, for a general taste suddenly 

 arose for this kind of pursuit, among all who read 

 the various works which soon appeared on the 

 subject; and, to gratify the new taste, a host of dealers 



83 D 



