...gases. Whence the source of this metamorphosis'? It has been truly said that the table of contents of a mineral spring is but an index of the various geological strata through which it has passed and of the mineral bodies with which it has come in contact. " AVater wears away a stone"...

...through which its component parts have slowly passed. As has been truly said, "the table of contents of a mineral spring is but an index of the various geological...mineral bodies with which they have come in contact." Whatever is soluble in the region through which the underground waters flow will, of course, be taken...

...through the black shales, and issue at springs to which they may give a more or less distinct fiavor. Many other substances are taken up, some of them in...mineral spring is but an index of the various geological strtta through which its waters have passed and of the mineral bodies with which they have come in...

...preparation of the body of this report, discusses the mineral waters of the Ohio shale as follows : ° It has been stated that the table of contents of the...come in contact. In this sense, the Devonian black shale* should be of special interest to the people of Kentucky, since a considerable part of the springs...