Flag Stones.

In a letter of Dr. Hector to the Superintendent^* he mentions that Mr. Howell had informed him that extensive beds of good flagstones are found in accessible positions at Preservation Inlet. I do not know what localities were meant, and the subject never appears to have been mentioned again by Dr. Hector. Inferior stones for paving could be got cheaply from the gneiss in most of the Sounds, but they would not be equal to proper flagstones. However I believe that gneiss, mica schist, and hornblende schist are all extensively used for pavements in the United States.