AFTER the President's Address (of. NATURE, October I, p. 527), the remainder of Monday was devoted to papers dealing with Prehistoric Archæology. Mr. Seton Karr exhibited specimens and photographs of the palæolithic implements which he had collected in Somaliland; these form an interesting link in the series of finds extending from India to Britain. It is well known that ordinary palæolithic implements of the river-gravel type are wanting in Ireland; but Mr. W. J. Knowles contends that the older flint implements he has found in the north-east of Ireland belong to this epoch, and that some bear striæ which “have been pronounced to be glacial.” A discussion arose in the afternoon, in connection with some photographs of dolmens in Brittany exhibited by Prof. Herdman, as to the age of such structures. Prof. Boyd Dawkins mainlained that they belonged to the Bronze Age, while Dr. Montelius, Dr. Garson, and others recognise that they are essentially Neolithic.