i'liutu by Sliulcy C. ilulsc 
FISH lO FEET FROM CAMERA 
In view of the inevitable death of the 
salmon after spawning, an improvement 
over the old method of forcible expul- 
sion of the eggs is the stunning of the 
fish by a blow on the head and the taking 
of the eggs by abdominal section. This, 
while greatly facilitating the work of the 
spawn-takers, adds approximately lo per 
cent to the egg yield by the saving of 
eggs that would ordinarily be left in the 
abdominal cavity. 
Salmon eggs hatch slowly. Incuba- 
tion, beginning in late summer or early 
autumn, continues until the following 
spring or summer, depending on the 
temperature of the water. The most 
protracted period of incubation thus far 
coming to the notice of fish culturists is 
that of the red salmon at Karluk, Alaska, 
where eggs taken in September may not 
hatch until the following May or June, 
and in certain seasons the hatching time 
has been prolonged to 270 days. 
The annual deposits of young salmon 
in the waters of the Pacific seaboard by 
the Bureau of Fisheries, the three coast 
States, the province of British Columbia, 
and the private hatcheries in Alaska now 
total from 450 to 500 million, of which 
the largest quantity represents the work 
of the Federal government. 
The human effort represented by this 
506 
