124 Salmon at the Antipodes. 



CHAPTEE XV. 



TRANSPORT OP LIVE PISH. 



The transport of live fish to long distances 

 has been a most difficult problem, until it was 

 discovered that the main want of the fish was 

 atmospheric air, or the oxygen contained in 

 it. It may seem strange, at first sight, that 

 fish should need air, when they always live 

 in the water, and still more so that they 

 cannot rise to the surface, and obtain the 

 needed oxygen from the air that is so easily 

 within their reach. It is found in practice, 

 however, that few river fish will live long in 

 a vessel of still water, unless there be a 

 current running into it. It is true that pond- 

 fish can do so, but they have the faculty of 

 sucking in air at the surface of the water, as 

 may often be seen in the glass globes in 

 which the golden carp are usually kept. 



An interesting experiment is detailed in 



