_Irish Limestone Caverns._--At a late meeting of the Cork Cuvierian Society, Professor Harkness, so well known for his investigations of Scottish rocks, announced the discovery of the bones of mammals in a limestone quarry at Middleton, County Cork. The rock consists of the ordinary limestone of the district, in one part much fissured, and under this fissured portion there is a mass of brown clay, the thickness of which cannot be determined, as its base is not seen. This reddish-brown clay under the limestone is the deposit which furnishes the fossil bones, and which, doubtless, fills the space which was once a natural grotto. Beside the bones, which are in a fragmentary condition, there are also present teeth and antlers. The latter are much broken, and do not afford sufficient character to enable the species to be accurately determined. They seem, however, to belong to two forms, one of which had the beam and branches smooth and sub-compressed, features which indicate the antlers of the reindeer; and the other with the horns rounded and rough, a form of surface which marks the antlers of the common stag. Of these antlers two portions which appear to belong to the reindeer have been cut while in the fresh state; and the faces of the cuts being almost smooth, this cutting appears to have been effected by a fine regular-edged instrument rather than, by a serrated tool. The leg bones which appear in this clay have all been broken, for the most part longitudinally, except the carpal and tarsal, and other small bones of the extremities. This longitudinal fracturing of the long bones of the leg is not known to occur in any mammalian remains which belong to a period previous to that where we have evidence of the existence of {137} the human race; and these broken bones afford evidence of the occurrence of man, who, for the purpose of obtaining the marrow, divided them in the direction most available for this object. Beside the evidence afforded by the cut antlers and longitudinally divided bones, there are other circumstances indicating the occurrence of man in connection with these remains; one of these is the presence of charred wood, which is equally disseminated through the clay with the bones and teeth. This charred wood is the remains of the ancient fires by means of which former human beings cooked their food.