54 ORIGIN OP THE 



Some of the molten rocks, when they were 

 now protruded upwards through the waters, 

 would separate into congeries, and, falling back 

 into the liquid mass, would be conglutinated 

 with it, and form what is now familiarly termed 

 pudding-stone. 



Meantime, the waters were kept in a state of 

 ebullition ; and the agitation beneath them con- 

 tinued ; and the oxides of the metals were dis- 

 solved, and diffused throughout the boiling flood 

 of waters, and were thus prepared for forming 

 new chemical compounds, as the heat subsided. 



