It is supposed, whatever theory of the origin of the earth we favor, that in its early stages the earth lacked both hydrosphere and atmosphere, and that during the growth of the earth these gradually accumulated on and near the surface in the manner stated.
"The Economic Aspect of Geology"
C. K. Leith
Water from the hydrosphere is continually rising in vapor into the atmosphere, the air of the atmosphere penetrates the hydrosphere,-for its gases are dissolved in all waters,-and both air and water enter and work upon the solid earth.
"The Elements of Geology"
William Harmon Norton
As the heat of the interior increased, these gases transpired to the surface and formed the primitive atmosphere and hydrosphere.
"The Elements of Geology"
William Harmon Norton