THROUGH the courtesy of Mr. Bosworth Smith, the _Athenæum_ has been enabled to print an interesting letter by Mr. H. A. Brown, regarding some explorations which he has been making in Minorca. He has visited a remarkable cave city which has not been properly explored:--“The locality is a wild-looking inlet between high cliffs. In these cliffs are a vast number of rock-hewn caves--possibly 300. Such tradition as there is concerning this most curious spot ascribes it to the Phœnicians; but we concur in thinking that it is the work of a much earlier people.... In some of the larger ones there are evidences of considerable development; for instance, in one of the largest are three recesses in the wall, some two feet from the ground, a sort of rock divan, while several have ante-chambers communicating with the main room; but, on the other hand, the smaller are mere holes in the rock, having, however, in some cases, a sill, or threshold, distinctly raised above the level of the floor. It seems to us that this disparity may be accounted for in three ways: either the people during a long occupation advanced in the construction of their dwellings, or the smaller caves are merely the tombs of the inhabitants of the larger, or possibly the chiefs inhabited the large and the people the small caves.... The small caves are all in a more or less inaccessible position, but having entered one near the ground we commenced to dig. At about nine or twelve inches down we came upon the bones of animals and two most remarkable skulls. Being compelled by pressure of time to move on, we went round the inlet and entered a cave on the other side, higher up the cliff than the former. Immediately after removing the loose sand, we came to thick, black earth, and the first stroke of the hatchet brought up some human bones, and by the time we were obliged to leave, the best part of a skeleton was unearthed, including several pieces of the skull. The majority of the bones were of a reddish colour, but all in one corner were perfectly black, either from extreme age or the action of fire.”