FINGER LAKES OF NEW YORK. 



219 



Table 4. — Temperature (T) in Degrees Centigrade and Gram Centimeters (G. Cm.) of Work 

 Necessary to Distribute the Summer Heat Income — Continued. 



CAYUGA LAKE. 



Depth in meters. 



0-5.. 



5-10. 

 10-15. 

 15-20. 

 20-25. 

 25-30. 

 30-40. 

 40-50. 

 50-60. 

 60-70. 

 70-80. 

 80-100 

 100-134 



19. 6 

 ig. 6 

 19.4 

 16. o 

 9-9 

 7.8 

 6.4 

 S-4 

 4-9 

 4.6 

 4-5 

 4-5 

 4.4 



G. cm. 



187.6 



488.4 



727. 6 



603. 6 



189.6 



95- o 



94-9 



41. 6 



17-4 



9.2 



5-4 



10. 6 



7.2 



2, 478. I 



20. o 

 19.9 

 19. 6 

 14.9 

 9.0 

 6.9 

 S-6 

 4- 7 

 4-4 

 4.4 

 4-3 

 4- 2 

 4.2 



G. an. 



195-4 



497- I 



745-3 



503-4 



137-9 



56- o 



30.3 



5.8 



S-O 



2.6 



2-7 



2, 181. 5 



T. G. cm. 



21 4 

 20- 9 

 16.7 



II. c 



8.0 

 6.2 

 S- 2 

 4.6 

 4-4 

 4-3 

 4. I 

 4-1 



229.8 



598.2 



864.4 



673- 9 



264. 2 



105. 2 



■ 70. 7 



20.8 



6.2 



2.6 



2. 7 



2, 838. 7 



20. 7 

 18.8 

 13-2 

 9.8 

 7- 7 

 6.9 

 5-9 

 4-9 

 4.8 

 4-5 

 4-4 

 4-3 



239- 



554 



674. 



363 



183 



90. 



133 



S3 



17- 



13 



5 



5 



4.8 



1918 



T. G. 



7- 

 6 



5- 

 5- 

 4-7 



237-5 



560. 7 



718.8 



379- I 



196. I 



115-3 



147- 5 



97.0 



54.8 



26. 2 



12. I 



10. 6 



T. G. cm. 



20.8 



20. 5 

 19. 6 

 14.8 

 9-9 

 7-7 

 6-4 

 5-S 

 4-9 

 4.6 

 4-5 

 4-3 

 4-2 



215-3 



540.4 



745-3 



494.6 



89.6 



90-7 



92.9 



41. 6 



17-4 



9.2 



4.0 



5-3 



2. 446. 3 



SENECA LAKE. 



Depth in meters. 



T. G. cm. 



G. cm. 



G. cm. 



1918 



G. cm. 



Mean. 



G. cm. 



0-S-- 

 S-io. 



10-15. 



15-20. 



20-25 ■ 



35-30. 



30-40. 



40-50. 



50-60. 



60-70. 



70-80. 



80-100 

 100-130 

 130-150 

 150-188 



19.8 

 19.4 

 17-8 

 13-3 

 9-3 

 7-9 

 6-4 

 5-5 

 4-9 

 4.8 

 4.6 

 4-5 

 4- 2 

 4-2 

 42 



205-9 



552-8 



718. 2 



457-8 



194.6 



126. 3 



119. 6 



56. o 



24. 6 



19. o 



22. o 



19. 6 



19- 7 

 19. 2 

 17.8 

 14. o 

 8.0 

 6.3 

 5-8 

 4-6 

 4-4 

 4-3 

 4-3 

 4-2 

 4. I 

 4.0 

 4.0 



203.5 

 539-4 

 718.2 

 526.3 

 112. 2 

 44.9 

 67.6 



9-3 



3-5 

 3-8 

 S-5 



20. 4 

 20. 2 

 20. I 

 18.0 

 13-4 

 9-4 

 7- I 

 5-4 

 4- 7 

 4.4 

 4. 2 

 4.0 

 4-0 

 4.0 

 4.0 



220. 2 



603.0 



959-4 



996.4 



585.5 



237- 5 



195-0 



49-8 



14. o 



3-8 



20. 6 

 20. 5 

 20. 2 

 14 o 

 II- 5 

 8.2 

 6.8 

 60 

 5- 2 

 4-4 

 4-3 

 4- 2 

 4. I 

 4-0 

 4.0 



226. I 



626. 4 



975-5 



526.3 



380. I 



145- 5 



161. 2 



99- 5 



42. I 



3-8 



5-5 



20. I 

 19.8 

 19. 2 

 14-8 

 10. 6 

 8.0 

 6.3 

 5-4 

 46 

 4-5 

 4-3 

 4-2 

 4- I 

 4.0 

 4.0 



213-0 

 579.6 

 863.0 

 609.4 

 296.8 

 132.7 

 109. a 

 49-8 

 105 

 76 



4-5 



2, 5 16. 4 



3. 864. 6 



3. 876. 1 



DIRECT WORK. 



Table 4 shows the distribution of heat for the lakes under consideration. The 

 results of the computation only are given ; the details of the method being quite similar 

 to those illustrated in the paper before referred to (Birge, 19 16) and also in Table 5, 

 page 220, of this paper. Taking the means only it appears that in Canandaigua Lake 

 about 1 ,930 g. cm. of work per square centimeter of the area of the lake are needed to 

 distribute about 27,000 cal. of heat through the water, the depth of which is 84 m. In 

 Cayuga Lake about 2,450 g. cm. of work distribute 29,500 cal. in water, the maximum 

 depth of which is 133 m. ; in Seneca Lake 2,880 g. cm. distribute 34,000 cal. in water 

 the maximum depth of which is 188 m. 



The amount of work needed to carry the heat to the corresponding stratum of the 

 several lakes varies with the loss of density of the water due to rise of temperature 

 and with the quantity of water in the stratum. The latter factor is represented by 

 the reduced thickness of the stratum. (See Table 3.) The first factor is the more 



