FISHERIES OF ALASKA IN 1907. 27 
of salmon, he is unable to secure rebates on the fry liberated, and the 
hatchery thus is operated, and has been for fifteen years, without the 
slightest possibility of a money return for work or expense, being a 
heavy outlay in earnest effort to build up the fisheries of that region. 
At Fortmann hatchery the month of January was excessively cold, 
and on the last day of the month a flume supplying water to a portion 
of the hatchery was frozen solid. About 18,000,000 eggs dependent on 
this water were removed from the hatchery and placed in a pond, but 
practically all of them died. To increase the output this fall the 
hatchery sent a party to Quadra, a distance of 61 miles, and here se- 
cured over 6,000,000 eggs, but late advices are to the effect that these 
do not promise well. 
The superintendent of Fortmann hatchery, as a part of his regular 
campaign against the various enemies of the salmon and destroyers of 
the eggs in the vicinity of the hatchery and spawning grounds, set a 
trap of wire netting in Naha stream near the hatchery for the sculpins, 
or so-called ‘‘bullheads,’’ which frequent the spawning grounds to feed 
on salmon eggs. The trap was baited with salmon eggs and the scul- 
pins entered it readily. Forty thousand were taken during the sea- 
son, 2,700 entering the trap during one night. The trap also took 
numbers of young trout. The destruction of such enemies of the sal- 
mon, which eat both eggs and fry, is obviously an important part of 
salmon-cultural work. At Fortmann hatchery, before fry are planted 
in the Naha, the stream is freed of trout by dynamiting the pools and 
places in which they lurk. 
OutTeuT OF THE SALMON HATCHERIES OF ALASKA 1906-7 AND 1907-8. 
1906-7. \| 1907-8. 
Sockeye. Coho. Bpetiend Total. || Sockeye. 
Hatcheries. Are a ’ ; 2 
Eggs Fry liber-| Eggs eae Eggs ees Eggs Fry liber- || Eggs 
taken. ated. taken. pred taken. miele taken. ated. || taken. 
— - u -j[- 
Realise oe e- 38, 679, 200, 36, 846, 000)... ...-. Reneos Sueeeo re Saab acc 38, 679, 200! 36,846,000 | 47,808, 200 
Fortmann. .-..}105, 420,000) 80,946,000) 30,000, 27,000). ....-.- |....----|105, 450, 000} 80,973,000} 41, 280, 000 
Yes Lake. ._...| 58,210,000) 54,610, 800).......|....... 182,000} 143,500) 58,392,000) 54, 754,309| 65, 550, 000 
Kilawaile- 25. 222 3,600,000) 1,187,000)......- [epee | ee wee a eB 3,600,000) 1,187,000} 3,500,060 
UGE ORR DIAG, Sea aan ol bedeetn ae ae AOS Sn cel ee eee |Seaeneea |ooer ctor [Set ne ee oe eee eee oA S 8 
Pini teereriee Slo sc Sees baer es a ee | ees 3 Oto es Bepeoaos eee se aero ae 5 (oe ee Bae -| 8,000. 600 
Total... .|205, 909, 200 173, 589, 800, 30,000) 27,000 182, 000 143, 500/206, 121, 200}173, 760, 300||166 138 200 
| 
a Operated in 1906-7 but no report received; probably not operated in 1907-8. 
SALMON-MARKING EXPERIMENTS. 
Salmon-marking experiments, though open to various objections 
and apt to be inconclusive, nevertheless are one of the few practicable 
methods of studying the difficult problems of age and migrations of 
the salmon, and are capable of being made to furnish useful informa- 
tion. They involve a great deal of work, for it is necessary to ex- 
amine large numbers of salmon at various localities each season to 
