The author announced that, since his former paper was read, on the organic remains of the limestone quarry at Burdiehouse, discoveries of still greater interest had been made. These chiefly consist of the remains probably of a large animal of the Saurian tribe, namely, what appears to be the epiphysis of one of the vertebræ, presenting, when broken across, the cancellated structure of bone–several large scales obtained by Mr Connell,—and, in particular, a large and beautifully perfect tooth, two inches and a quarter long, and covered with its enamel, which is quite entire. The remains here alluded to were exhibited and presented by the author and Mr Connell to the Society's Museum.