Canal being filled; Coal along the Potomac

ALEXANDRIA, OCT. 14.
Whilst we are writing, the waters of the Potomac above Harpers-Ferry are silently flowing into the Chesapeake and Ohio Canal. Passing the long contested Point of Rocks into the long finished part to Seneca, they will connect the tide water of this District to the fertile region of the Shenandoah and the upper part of Virginia and Maryland watered by the Potomac and its tributary streams.

This part of the Canal is the most expensive of the Eastern section. The difficulties have been surmounted in a manner which reflects the highest degree of credit on those who directed and those who have executed the work. Early in the ensuing season, more than one hundred miles will be completed, passing Shepherdstown and Williamsport in its route.

The hopes of the people of this District have been raised to the expectation of its continuance to the bituminous coal region above Cumberland, and we hope they will not be disappointed.

In the mean time, however, we have the extreme gratification of feeling an assurance that the supply of Coal will not depend on this event. We have before us a favorable specimen of Anthracite Coal, found about 5 feet below the surface of the ground, near the line of Berkeley and Morgan counties, in Virginia, about fifteen miles from the Potomac. There is every reason to believe that it will be found much nearer to the Canal, and that the supply of this article of necessity will be abundant in quantity and excellent in quality.

Those who are the believers in the Goddess of Good Fortune, may congratulate us on this lucky hit. As we could not arrive at the Coal Banks so soon as we wished, the Coal Banks have kindly met us half way. We trust that the Canal, this District, and the country at large, will reap the benefit of this important discovery. –[Gazette.