J. M. with his respects to Professor Rogers, returns many thanks for the Copy of his Report on the "Geological Reconnaissance of the State of Virginia."

Unskilled as he is in the subject; he cannot but regard the Report as an able & instructive commencement of a task, which if duly prosecuted under the auspices it merits, cannot fail to amplify greatly the resources of the state, & to afford aliment at the same time to a science becoming every day more and more interesting.