overland about a mile in addition to transportation in floating cars
from 3 to 5 miles; they were transferred suddenly from the salt water
of the river (about two-thirds as salt as common sea-water) into the
entirely fresh water of the lake. To all the supposed unfavorable
circumstances must be added the high summer temperature of the water.
During August the mean was generally above 70 degrees Fahrenheit at the
bottom and several degrees warmer at the surface. Occasionally there
was observed a midday temperature of 74 degrees F. and once 75 degrees
at the bottom. Yet this proved an excellent place for our purpose, a
satisfactory percentage of the salmon remaining in perfect health from
June to November.

No. 4. The inclosure in use since 1870 at Dead Brook, Bucksport. It is
located in a gently running stream bordered by marshy ground, with a
bottom in part of gravel but mostly of mud, crowded with aquatic
vegetation. The water, supplied by two small lakes among the hills, is
cleaner than the average of Maine rivers, but does not in that respect
approach the water of inclosure No. 1. The greatest depth is about 8
feet, but in the greater part of the inclosure it is from 3 to 5 feet.
The width of the stream is from 2 to 4 rods, and the portion inclosed
is 2,200 feet long. The barriers to retain the fish are in the form of
wooden gratings, with facilities for speedily clearing them of debris
brought down by the stream.

Better results were expected from this inclosure than from No. 3, but
have not been realized. The percentage of salmon dying in confinement
has been greater, amounting commonly to about 25 percent of those
introduced, and this notwithstanding the salmon are conveyed to the
inclosure by water carriage the entire distance (7 miles) instead of
being carted in tanks.