about three feet above the surrounding level. Beyond this is the embankment, forming a circle, the radius of which, measured from its outer edge, is 117 feet. The radius of the circle, on the circumference of which the stone columns were placed, is about fifty-two feet; and judging from the space between those still standing, twelve stones may be supposed to have completed the circle. But though so small a group when compared with the Ring of Brogar, its columns are fully double the average height of the great circle, and it must have presented, when perfect, a far more magnificent and imposing aspect. It is painful to think that within our own time these most interesting memorials of an era far beyond the date of written records have fallen a prey to ignorance, in that dangerous transition state when the trammels of superstition are broken through without being replaced by more elevated principles of veneration. An intelligent native of Orkney, who appears to have left his home about 1789, remarks in his MS. notes accompanying a valuable donation of books relating to the northern islands presented to the Society of Antiquaries of Scotland:--"If Mr. Daniell's sketch of the Stones of Stennis (taken in 1818) be at all accurate, many of them have disappeared, and others fallen to the ground, since I can remember."[135] It was in the immediate neighbourhood of the smaller circle of Stennis that the Stone of Odin stood, completing, along with the adjacent earth-works alluded to in a former chapter, a group of primitive monuments, which, though inferior in magnitude to the vast temples of Wiltshire, or of Carnac in Brittany, are scarcely surpassed in interest even by these remarkable monuments. I am indebted to Lieutenant Thomas, R.N., to whose liberal communications of the result of his observations in Orkney I have already referred, for careful observations and measurements made by him on the Stones of Stennis, of which the following are the most important results:-- The Great Circle of Stennis, or Ring of Brogar, is a deeply entrenched circular space, containing almost two acres and a half of superficies, of which the diameter is 366 feet. Around the circumference of the area, but about thirteen feet within the trench, are the erect stones, standing at an average distance of eighteen feet apart. They are totally unhewn, and vary considerably in form and size. The highest stone was found to be 13.9 feet above the surface, and, judging from some others which have fallen, it is sunk about eighteen inches in the ground. The smallest stone is less than six feet, but the average height is from eight to ten. The breadth varies from 2.6 to 7.9 feet, but the average may be stated at about five feet, and the thickness about one foot--all of the old red sandstone formation.