SALMON AND TROUT IX ALASKA. 109 



Ducks are perhaps the most active enemy of the sahnon in Alaska, 

 especially the sawbill (Merganser) and golden eye (Clangula). All 

 ducks will doubtless root up the beds in low water, but those just 

 mentioned, as well as the harlequin (nistrioyricus) and the gulls and 

 terns, will dive for eggs. The sawbill is resident in Southeast Alaska, 

 where the young arrive in time to feed on the coho fry but rather too 

 late for others. In the fall the birds work with the spawning salmon, 

 diving for the eggs as they are extruded or exposed by the shifting of 

 the gravel. Mallards feed more on the blowfly maggots in the dead 

 fish, but apparently find a sufficient number of eggs to ruin the flavor 

 of their flesh for tlie table. The larger flocks of ducks arrive rather 

 late in the season in the Loring district, doing greatest damage to 

 the coho in large streams, but a considerable number arrive in time 

 for the earlier species of salmon. They do not seem to frequent the 

 small streams, except those tributary to lakes. The grebe family 

 does not seem ordinarily to take young salmon. 



GEOGRAPHICAL GLOSSARY. 



Following is a list of the geographical names used in this report, 

 with approximate position of the places. The astronomical position is 

 given of rivers and bays for their mouths, of islands for the center, of 

 straits for the center or the more prominent mouth or connecting end. 



Admiralty Inlet, waters between Whidby Island and the mainland to the westward. 



48° N., 122° 40' W. 

 Alder Creek, one of two main tributaries entering at the head of upper Kacta Lake. 

 Alert Bay, small bight on south side of Cormorant Island north of Vancouver Island 



50°35'N., 126°57MV. 

 Aleutian Islands, chain of islands on the south of Bering Sea. 

 Alturas Lake, small lake of the Columbia Basin, tributary to Salmon River, central 



Idaho. 43° 55' N., 114° 51' W. 

 Anan Stream, stream emptying into Bradfield Canal from the south. 56° 12' X., 131° 



49' W. 

 Annette Island, small island south of Revillagigedo Island. 55° 08' N., 131° 30' W. 

 Baxrd, U. S. hatchery on the McCloud River, northern California. 

 Baker Lake, small lake in northern Washington, tributary- to the Skagit River. Loca- 

 tion of United States hatchery. 48° 44' N., 121° 37' W. 

 Bartlett Bay, small bight off oast side of Glacier Bay. 58° 27' N., 135° 53' W. 

 Battle Creek, tributary of the Sacramento River, northern California. 

 Behn Canal, channel separating Revillagigedo Island from Cleveland Peninsula on 



the west and the mainland on the east. 

 Bering Island, largest of the Komandorski group. 

 Boca de Quadra, long, narrow fiord in the mainland south of Revillagigedo Island. 



55° 05' N., 131° W. 

 Bradfield Canal, deep fiord in the mainland aI)ove Cleveland Peninsula. 55°11'N., 



132° W. 

 Bristol Bay, large l)ay north of Alaska Peninsula. 58° X., 159° W. 

 Cape Caamano, south point of Cleveland Peninsula. 55° 30' N., 131° 58' W. 

 Cape Chacon, south point of Prince of Wales Island. 54° 42' X., 132° 01' W. 

 Carroll Inlet, long, nan"ow inlet in southern part of Revillagigedo Island. 55° 20' N., 



131° 128' W. 

 Chinook River, small tributary of the Columbia near its mouth. 46° 18' N., 123° 58' W. 



