grey slope of the hill-side, from the richer growth and brighter green of the grass, within the circle sacred of old to the hospitable rites of our barbarian ancestry, and where the accumulated refuse of their culinary operations have thus sufficed to enrich the soil. The first indication of a slight advancement in the constructive skill of the primitive architect is discernible in the strengthening of his domestic inclosure with stone. This is not infrequently accompanied with small circular or oblong field inclosures, as if indicating the dawn of civilisation, manifested in the protection of personal property, and the rudiments of a pastoral life, in the folding of sheep and cattle. Still greater social progress would seem to be indicated in those examples, also occasionally to be met with in various districts, where a commanding site appears to have been chosen for the location; and traces still remain of an earthen rampart inclosing the whole, as on the Kaimes Hill, in the parish of Ratho, Mid-Lothian. Such, perhaps, may be the remains of a British camp, or of a temporary retreat in time of war. With this class also may be grouped the "Picts' kilns," on which Chalmers, Train, Sir Walter Scott, and other antiquaries, have expended much conjecture and useless learning. These are of frequent occurrence in Wigton and Kircudbright shires, as well as in parts of the neighbouring counties. They consist of elliptical or pear-shaped inclosures, measuring generally about sixteen feet in length and seven or eight feet in breadth. Externally the walls appear to be of earth, sometimes standing nearly three feet high. On removing the surface they are found to be constructed internally of small stones, frequently bearing marks of fire. They are popularly believed to be ancient breweries reared by the Picts for the manufacture of a mysterious beverage called _heather ale_. Sir Walter Scott suggests, with not much greater probability, that they are primitive lime kilns. They are said by Mr. Train to be invariably constructed on the south side of a hill, close to the margin of a brook, and with the door or narrow passage facing the stream. Future excavations on their sites may perhaps furnish more conclusive evidence of their original purpose.