586 
BULI.ETIN OF THE BUREAU OF FISHERIES. 
Fig. 17. — Dissolved gases, Seneca Lake, Aug. 4, 1910. For 
explanation see fig. 9, p. 580. 
Fig. 18. — Dissolved gases, Skaneateles Lake, Aug. is, 
1910. For explanation see fig. 9, p. 580. 
