THE AQUARIUM 81 



of the fittest shows itself in a somewhat melancholy form. It 

 must, however, be admitted, a really successful aquarium tank is 

 a beautiful object, and may be said to be quite worth the trouble 

 necessary to attain it for those who have the necessary leisure. 



Those who wish for further information on the subject of aquarium-keeping 

 should consult the following, among other works : Gosse's Aquarium (Second 

 edition), London, 1856, a book which can never lose its historical interest ; The 

 Aquarian Naturalist, by Rymer Jones, London, 1858. Both of these refer to the 

 marine aquarium only, but the Rev. J. G. Wood's little book, The Fresh and 

 Salt-Water Aquarium, London, n.d., includes both, and in Furneaux's Life in 

 Ponds and Streams, London, 1906, the freshwater aquarium is very fully con- 

 sidered. 



VOL. n. 6 



