52 
BULLETIN OF THE BUREAU OF FISHERIES. 
Page. 
Lakes in western Washington 97 
American Lake, Wash 97 
Lake Chaplain, Wash 97 
Cottage Lake, Wash 98 
Cow Lake, Wash 98 
Crescent and Sutherland Lakes, Wash. . 99 
Lake Goodwin, Wash 99 
Green Lake, Wash 100 
Lake Ki, Wash 100 
Luna Lake, Wash 100 
Lake Martha, Wash 100 
Lake Padded, Wash 101 
Paradise Lake, Wash 101 
Lake Samish, Wash 101 
Lake Sammamish, Wash 102 
Silver Lake, Wash : 102 
Lake Spanaway, Wash 103 
Lake Steilacoom, Wash 103 
Page. 
Table 1. — Analyses of water of five lakes, 
shown in milligrams per liter 64 
Table 2. — Elevation of certain lakes and 
per cent of sea level saturation of dissolved 
oxygen .., 71 
Table 3. — Food from stomachs of six rainbow 
trout, Crater Lake, Oreg., August 3, 1912. . 75 
Table 4. — Food from stomachs of five 
crappie, Green Lake, Wash., August 9, 
1913 75 
Table 5. — Food from stomachs of 67 yellow 
perch caught in winter months, Lake 
Mendota, Wis 76 
Table 6. — Food from stomachs of 42 yellow 
perch caught in summer months, Lake 
Mendota, Wis 76 
Page. 
Lakes in western Washington — Continued. 
Lake Stevens, Wash 103 
Swan Lake, Wash 104 
Lake Tapps, Wash 104 
Lake Washington, Wash 104 
Lake Whatcom, Wash 105 
Lake Wildwood, Wash 105 
Lakes in California and Oregon 105 
Crater Lake, Oreg 105 
Temperatures 106 
Net plankton 108 
Fallen Leaf Lake, Calif 108 
Lake Tahoe, Calif 109 
Temperatures Ill 
Plankton Ill 
Diurnal migration 112 
Upper Klamath Lake, Oreg 112 
Tabular data covering all lakes examined... 114 
Bibliography 138 
■Page. 
Table 7. — Lakes examined in eastern Wash- 
ington and Idaho 77 
Table 8. — Lakes examined in western Wash- 
ington 97 
Table 9. — Temperatures taken at 100 m. and 
below, Crater Lake, Oreg., 1913 107 
Table 10. — Temperatures taken at various 
depths, Lake Tahoe, Calif., 1873, 1904, 
and 1913. .:.... .i. . A ... Ill 
Table 11. — Depth, temperature, dissolved 
gases, and transparency of lakes examined . *114 
Table 12. — Analysis of net plankton of lakes 
examined 122 
Table 13. — Geographical distribution of 
plankton Crustacea in lakes examined.. 136 
INTRODUCTION. 
The work described in this paper was conducted for the United States Bureau 
of Fisheries during the summers of 1911, 1912, and 1913. The investigation was 
in charge of George Kem merer, who was responsible for the soundings, the tem- 
perature observations, and the chemical work in determining the dissolved gases. 
During the summer of 1911 John F. Bovard served as biologist, and in 1912 and 
1913 W. R. Boorman. 
In 1911 headquarters were established at Spokane, Wash., and the lakes of 
that section were studied. In 1912 some additional lakes in the vicinity of Spokane 
and the lakes of southern Idaho were investigated. In 1913 Lake Tahoe and 
Fallen Leaf Lake, of California, and Crater and Upper Klamath Lakes, of Oregon, 
were examined for comparison with the deep lakes, such as Chelan and Pend Oreille. 
The month of August, 1913, was spent on the lakes of western Washington. 
