FINGER LAKES OF NEW YORK 



251 



The largest amount was obtained at 32 m. in Seneca Lake, where it reached 1,693 '^g- 

 of dry material per square kilometer, or a little more than 15 pounds per acre. 



The deepest haul in Cayuga Lake yielded a larger amount of organic matter than 

 the deepest haul in any of the other lakes, while the one at 34 m. was the poorest of all, 

 due most probably to the fact that it was made on a very steep slope. Green Lake 

 showed the second largest amount of material in its deepest water and Canandaigua 

 Lake was third. In Seneca Lake the amount at 1 10 m. was only about three-quarters 

 as great as at 172 m. In general, it appears that the bottom fauna in the deeper water 

 of Green Lake yields a larger amount of dry organic matter per unit area than these 

 three Finger Lakes. 



Table 23. — Number op Individuals and Weight of Bottom Fauna Obtained at Dlfferent 

 Depths IN Three Finger Lakes, N. Y., and in Green Lake, Wis., in igi8. 



canandaigua lake. JULY 38, 1918. 



34-- 

 113- 



3a., 

 47. 



IIO 



173 



fProtenthes... 

 \Pontoporeia.. 

 Oligochaeta. . 



Chirouomus. . 

 Pontoporeia . 

 Oligochaeta. . 

 Chiron omus.. 

 Pontoporeia.. 

 Oligochaeta, . 

 Chironomus. , 

 Pontoporeia.. 

 Oligochaeta. . 



Chironcanus. . 

 Protenlhes. . , 

 Pontoporeia. 

 Oligochaeta. 

 Chironomus . 

 Pontoporeia., 

 Oligodiaeta . . 



CAYUGA LAKE. JULY 30. 1918. 



/Chironomus., 

 \Pontoporeiia 



{Chironomus. 

 Pontoporeia . 

 Oligochaeta. 



SENECA LAKE. AUG. i, 1918. 



89 



1, 110 



5,340 

 577 

 844 



1.330 

 444 

 353 

 400 

 44 

 133 



1,386 



GREEN LAKE. AUG. 30. 1918. 



S9 



15 



6.883 



1.480 



407 



459 



1,643 



37.7 

 10. S 



9,910.0 

 488.4 

 181. 3 

 661.0 

 543.3 



•25 



.09 



88.36 

 4.35 

 1.61 

 5.90 

 4-83 



25-7 

 64.0 

 784.4 

 355.6 

 416. 2 



28.8 

 399-6 

 1,693.8 

 HI. 7 

 303-8 

 429.7 



8s- 3 



137-8 



139- 3 



8-S 



47-8 

 415- 5 



26.6 

 9-7 



8.313.6 

 464. o 

 174.0 



561. 3 

 515.1 



-23 



-57 



6.66 



3.2» 



3-70 



.26 

 3- 55 

 IS- 07 



-99 

 3.70 

 3-8. 



•76 

 1. 14 

 I. IS 



.07 



■43 

 3-70 



-24 

 .08 

 74-93 

 4-«3 

 1-55 

 5-00 

 4-59 



