40 AMERICAN FISH CULTURE. 



of its falling in ; large gimlet holes are also to be bored in 

 it, so as to afford air to the fish when it is in its place. 

 The water should be renewed as opportunity offers, and the 

 state of the weather demands, and may be oxygenated by 

 dipping some out and pouring it back, elevating the vessel 

 from which it is poured as much as possible for that pur- 

 pose. The usual place for a barrel when so used in carry- 

 ing trout by railroad, is the baggage car, and as the barrel 

 is necessarily wet outside from jolting (and the more jolting 

 it gets the better), it should be set near the side door of 

 the car, where there is a draft of air, which tends largely 

 to keep the water inside cool. In moderate weather in 

 June, I have thus taken a hundred and fifty trout in a forty 

 gallon barrel two-thirds full of water, sixty miles without re- 

 plenishing it. When ice can be had, a piece may be dropped 

 in occasionally to keep the water cool. Too great a degree 

 of cold, however, is injurious. I have had trout to die in 

 my ponds some days after transporting them as I thought 

 safely, from the effects of what I considered too lavish a 

 supply of ice. Pump water should never be used in 

 replenishing ; I have seen fifty trout turn on their sides as 

 soon as it was poured into a barrel. A bellows may be used 

 for aerating the water, by inserting the nozzle the whole 

 depth and blowing. A zinc vessel on this principle is used 

 in England, the air being pumped through a tube opening 

 into the bottom of the vessel. The same principle was 

 applied, though differently arranged, by Barnuni, at his old 

 Museum, for aerating the water in the aquaria in which 

 he kept trout. When taking them in a wagon, the barrel 



