Page:A Journey to the Western Islands of Scotland - Johnson (1775).djvu/76

 rocks that inclose it. Its profundity though it should be such as is represented can have little part in this exemption; for though deep wells are not frozen, because their water is secluded from the external air, yet where a wide surface is exposed to the full influence of a freezing atmosphere, I know not why the depth should keep it open. Natural philosophy is now one of the favourite studies of the Scottish nation, and Lough Ness well deserves to be diligently examined.

The road on which we travelled, and which was itself a source of entertainment, is made along the rock, in the direction of the lough, sometimes by breaking off protuberances, and sometimes by cutting the great mass of stone to a considerable depth. The fragments are piled in a loose wall on either side, with apertures left at very short spaces, to give a passage to the wintry currents. Part of it is bordered with low