On the outside, before each door-post, there stood formerly a semi-column, having a base and capital with fantastical sculptures in the Persepolitan style. In the middle of the doorway can be seen the holes for the bolts and hinges of the doors, and in the same line are a number of round holes, 2 inches in diameter and half an inch deep; in these are two small holes for bronze nails, of which fragments still exist, to fasten on ornaments of a circular form. To the right of the great circular hall, a doorway, 9½ ft. high and 4 ft. 7 in. broad, leads to a second dark chamber, which is nearly square, being 27 feet long and broad, and 19 feet high. It is entirely cut out in the rock. Over the door is a triangular niche, which is likewise intended to bear up the weight of the masonry from the lintel. In this chamber is an accumulation of rubbish, from 3½ to 4 feet deep, mostly consisting of the detritus of bats' dung. By means of the two trenches, which I dug three years ago in this chamber, I found in the centre a circular depression, in the form of a large wash-bowl, 1 ft. 9 in. deep, and 3 ft. 4 in. in diameter. Near this I found some large wrought calcareous stones, which seem to indicate that some monument once existed in this chamber, for otherwise their presence is inexplicable. This Treasury is the most important and the only complete monument of prehistoric times in Greece, and the interest attached to it is so much the greater, as tradition assigns it to Atreus, the father of Agamemnon, king of men. [Sidenote: PURPOSE OF THE TREASURY.]