In the low grounds of the Great Kanhaway, ſeven miles above the mouth of Elk River, and 67 above that of the Kanhaway itſelf, is a hole in the earth of the capacity of 30 or 40 gallons, from which iſſues conſtantly a bituminous vapor, in ſo ſtrong a current, as to give to the ſand about its orifice the motion which it has in a boiling ſpring. On preſenting a lighted candle or torch within 18 inches of the hole, it flames up in a column of 18 inches diameter, and four or five feet height, which ſometimes burns out within 20 minutes, and at other times has been known to continue three days, and then has been ſtill left burning. The flame is unſteady, of the denſity of that of burning ſpirits, and ſmells like burning pit-coal. Water ſometimes collects in the baſon, which is remarkably cold, and is kept in ebulition by the vapor iſſuing through it. If the vapor be fired in that ſtate, the water ſoon becomes ſo warm that the hand cannot bear it, and evaporates wholly in a ſhort time. This, with the circumjacent lands, is the property of his excellency general Waſhington and of general Lewis.
There is a ſimilar one on Sandy River, the flame of which is a column of about 12 inches diameter, and three feet high. General Clarke, who informs me of it, kindled the vapor, ſtaid about an hour, and left it burning.
The mention of uncommon ſprings leads me to that of Syphon fountains. There is one of theſe near the interſection of the lord Fairfax's boundary with the North mountain, not far from Brock's gap, on the ſtream of which is a griſt-mill, which grinds two buſhels of grain at every flood of the ſpring: another, near the Cow-paſture River, a
