352 



found in seawater. They are made, as before, by determinations 

 of the quantity of CO^ remaining in the water after repeated 

 shakings with air. The figures, however, do not quite agree, 

 but ToLMAN (Jowrw. of Geol. vol.7, 1899 p. 610) has picked out 

 ■ those that seem to correspond best with each other» for the 

 construction of curves. These curves (as well as the figures 

 themselves) represent the tension as being at temperatures 

 up to 2°, the quantity of carbonic acid being at the same time 

 double that of the alkalinity, and, even at 25°, the quantity 

 corresponding to a tension of is not less than 1.6 x the 

 alkalinity! These experimental results are in accordance with 

 DiTTMARs theoretical conceptions as given above in his own 

 words, but they are absolutely incompatible with those of Tolman, 

 who nevertheless proceeds to build upon them a very elaborate 

 hypothesis concerning the interaction between the ocean and 

 the atmosphere. That they cannot be correct will appear from 

 the following experiments by Hamberg and myself. 



Bamberg in a series of experiments conducted a stream of air 

 with a constant percentage of COo through samples both of pure 

 and diluted seawater, until equilibrium was attained, a method 

 exactly the reverse of my own. The results are tabulated as follows: 



