FISHERY INDUSTRIES. O77 
A series of small ponds near the hatchery, into which the fry are 
placed after coming from the hatchery troughs are ideally situated in 
some respects as they represent very closely natural conditions. 
These ponds are protected from the depredations of birds and other 
natural enemies by means of webbing which is spread across them. 
After the fry have remained in these ponds for some time and have 
attained considerable growth they are allowed to work down into 
the lake where they remain for a year before leaving for salt water. 
HETTA. 
The Hetta hatchery, which is operated by the Northwestern Fish- 
_ eries Co., is located on Hetta Lake near the southern end of Prince of 
Wales Island, in southeastern Alaska. This hatchery was rebuilt in 
1912 and now has a capacity of about 12,000,000 red-salmon eggs. 
In the egg-collecting season extending from August 8 to December 
18, 1914, 7,438,500 red-salmon eggs were taken. The loss of eggs 
was 319,000, which was 4.2 per cent. The sworn statement returned 
by the Northwestern Fisheries Co., shows that 7,142,500 young red 
salmon were released in the fiscal year ending June 30, 1915, This 
might indicate a slight discrepancy from the above figures, but it is 
accounted for by the fact that at the Hetta station it is customary to 
carry over a few of the previous season’s fry into the succeeding fiscal 
year for which returns of fry released are made. The law provides 
that such returns shall show the number of fry liberated during the 
12 months immediately preceding June 30. 
The egg-collecting season of 1915 began August 19, when 216,000 
red-salmon eggs were secured. At the conclusion of egg-collecting 
operations on December 31, 1915, a total take of 8,114,000 red-salmon 
eggs had been made. Totals of 2,044 females and 1,962 males were 
handled. All eggs were taken by the modern method of incision. 
Some trouble has been experienced at this station on account of 
the unusual amount of fine sediment which is carried into the troughs 
from the supply pond a few hundred yards above the hatchery. This 
has been improved somewhat by a change in the method of drawing 
water from the supply pond, but further screening will be necessary 
in order to entirely overcome this difficulty. 
KLAWAK. 
The Klawak hatchery is located on the lake a few miles above the 
village of that name on the west coast of Prince of Wales Island in 
southeastern Alaska. This hatchery was reported last year as beng 
operated jointly by the North Pacific Trading & Packing Co. and the 
North Alaska Salmon Co. This year, however, it is listed under the 
name of the North Pacific Trading & Packing Co. The capacity of 
the hatchery is approximately 10,000,000 red-salmon eggs. In the 
