NATURAL HISTORY OF THE QUINNAT SALMON. 
107 
December 23, 1897, and the youngest January 23, 1898. The largest were 2.9 inches 
long, the smallest 1.6, a difference of 1. 3 inches, which can not be accounted for by the 
one month difference in age. There was still a difference of 1 inch in August, when 
they were 3.8 and 2.8 inches long. 
The following is a table of measurements of specimens taken in Hazel Creek 
during various months. They are thought to be representative, though the specimens 
were selected. We picked out extremes and what we thought to be average sizes. 
Table of measurements of specimens from Hazel Creek. 
Size. 
Number measured. 
Size. 
Number measured. 
May. 
July. 
Sept. 
Dec. 
May. 
July. 
Sept. 
Dec. 
2 
3.0 inches 
1 
1 
3.1 inches 
1 
3 
3.3 inches 
1 
1 
3.7 inches 
1 
2 
1 
3.8 inches 
i 
1 
3.9 inches 
1 
1 
4.2 inches 
1 
1 
4 
1 
i 4.3inclies 
2 
2.8 inches 
2 
1 
The above measurements indicate two ages in May, but the youngest were doubt- 
less from a few, probably a single pair of fishes, that spawned much later than usual. 
The oldest were from the regular fall run of adults. The difference between these 
two sizes in May was 0.9 inch. The two sizes are not discernible after May, those 
shown in the table being due to the selections of specimens, which is not the case 
for May, however. The growth is indicated by the increase in size of the smaller 
specimens. The smallest specimens were: In May 1.5 inches, July 2.1 inches, Sep- 
tember 2.8 inches, December 3.1 inches, the intervening period in each case being 
2, 2, and 3 months, and the increase being 0.6, 0.7, and 0.3 inch, respectively, or 
0.30, 0.35, and 0.10 inch per month. The total growth in 7 months, as shown by the 
smallest specimens, was only 1.6 inches, and for the last 3 months 0.1 per month. 
Pool A is at the mouth of Hazel Creek It is a semicircular pool of quiet water 
at one side of, but not at all separated from, the main channel. It is over 6 feet 
deep, and the seine had to be hauled by means of ropes. As the seine Avas stretched 
across the mouth of the pool and hauled in at the upper end, with the ends close to 
the banks, there was but little chance for the fish to escape. The pool was fished 
monthly, beginning with August. 
The following table gives the number and size of the young salmon taken in- 
Pool A during the season, and also indicates how many were marked fishes and had 
therefore remained since August. As the measurements were made on live fishes 
they could not be made accurately enough to be given in tenths. There was one 
2-inch fish taken in October, but it was not counted, as it evidently belonged to a 
different run. We marked and returned to the pool all of the fishes taken in 
August. None were marked in any other month. At another haul in September, 
not recorded in the table, 82 specimens were taken, 32 being marked, which was a 
larger proportion by 7 per cent than in the haul recorded in the table for that 
month. No marked fishes were taken in December. The record of one haul in pool 
E for September is given for comparison with one made in pool A on the same date. 
It sIioavs that specimens from pool E Avere smaller than those from pool A, Avhich 
was the deeper pool. 
