28 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
As the trout bass is a very voracious fish, which should by no means be introduced 
into any trout waters, it was deposited at Evois in a little lake which has no outflow, 
and from which, therefore, it can not spread to other waters. The lake in question 
is about 600 meters long by 400 meters broad, and its greatest depth is 9 meters. The 
bottom is composed of stone, gravel, and sand, and by means of its banks it is protected 
from the many sudden gales of the region. Tlie water is very transparent. The lake is 
very well supplied with perch, roach, and pike, and burbot also are found in small 
numbers. 
[Under date of December 31, 1893, Dr. Nordqvist -n-rote me from Helsingfors about tbe later liistory 
of tbe experiment as follows: "About the black bass I can only add that when put in the lake they 
disappeared in the darkness. When I visited the place the next morning none were seen, so I believe 
all were alive. If some of them had died, one would, no doubt, have seen them on the bottom, as was 
the case with some Coregonus marwna which were planted some days earlier in another lake also- 
belonging to the Experimental Station. Now the lakes are covered by ice, so I can not get any infor- 
mation about the bass until next summer.” — T. H. B.] 
