10 



Papers from the Marine Biological Laboratory at Tortugas. 



ZT.&C 



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34°3 



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36°3 



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37°4 



37.7 

 ■38° 2 



30° 5 



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30°9 



Record No. i b. 



vations are plotted in figure 2, and it appears that the increase in rate is 

 in the form of a straight Hne from 17.5° C. to 35° C. In other words, it is 

 arithmetically proportional to the increase in temperature. 



17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 



Degrees Centigrade 



Fig. 2, illustrating Record No. i A. 



