51 
portion is immediately placed in the river, whilst the 
other portion is kept in basins and fed with extreme care, 
the first will, after a short while, be twice as large as the 
second, because they have food which is better adapted 
to their needs; only, the loses among those which. have 
been kept in basins will not be as large (unless the cir- 
cumstances are particularly unfavorable), whilst the ranks 
of those which have been placed in the river have often 
been thinned to such an extent as to leave hardly any. 
They have fallen a prey to water rats, perch, pike, and 
even older trout. 
Thanks to the system of raising employed by Messrs. 
Lugrin and du Roveray. all these inconveniences dis- 
appear; kept in basins, protected against all danger, the 
young fish, abundantly fed on live food, develop as well 
if not better than under natural conditions without involv- 
ing any serious expense for their food; and when the 
suitable moment has arrived, they can easily be trans- 
ferred to the waters for which they are intended, without 
running the risk of losing many. 
It is therefore greatly to be desired that the Adminis- 
tration should abandon the use of very young fish for 
stocking rivers (as they are nearly all doomed soon after 
they have been placed in the river), and give the prefer- 
ence to fish ten or twelve months old, which, as is stated 
above, have yielded the most satisfactory results in Eng- 
land and Scotland. 
Messrs. Lugrin and du Roveray, convinced of the 
advantages of their system, propose, at their own expense, 
to stock a water course which, being subjected to special 
supervision, will enable them to make an absolutely con- 
vincing experiment. 
