CH. IIl.] CHANGE OF WATER—MODE OF TRANSPORT. 41 
ever purchased them when he became tenant of 
the waters, he is unable to speak positively as to 
their ages. He describes them as being very 
handsome, and invaluable for breeding purposes, 
though, for the reason above mentioned, he is 
unable to rely exclusively on them for his stock. 
Although both lakes, La Hulpe and Boilsfut, 
are fairly well supplied by springs and natural 
streams, yet he believes the qualities of the waters 
flowing through them to be different, the sources 
from which they are derived being distinct. 
With a view therefore of promoting the growth 
of his fish—a change of water being in his opinion 
the means which, more than any other, conduce 
to improve both their size and quality—he every 
other year transports the smaller fish from Boils- 
fut to La Hulpe, and vice versa. This he effects 
by carting them across in barrels, the proportion 
of water to fish in each being one-third water 
and two-thirds fish. In order to insure them a 
due supply of air during the transit, the hole in 
the side of each barrel is bunged up with a wisp 
of straw. By the jolting of the cart the fish are 
kept in continual motion, and, while the water is 
prevented from escaping, it becomes, by being 
shaken against the straw, sufficiently charged with 
