52 Siriciures on Volcanos and Karthquakes. 
condensed air below, and the air held in solution can be sup- 
posed ; it being known that the particles of gas, constantly 
repel each other. 
The answer given by you to number six and seven, objec- 
tions of the Editor, does not give me satisfaction: “ That 
the air should separate from water, saturated and compres- 
sed” is not as we think supported by analogy, but is contra- 
ry thereto, as all soda-water preparers may witness. Indeed, 
Sir, in support of this part of your hypothesis, a few facts or 
‘examples are required. 
re 
would be the effect of subterraneous heat upon the superin- 
cumbent mass of fluid? Would not a circulation ensue, ef- ° 
fecting an exchange between the lower and upper portions, 
surface of the sea to the extent here indicated has to my 
knowledge been noticed by any writer. 
