Professor Boyd Dawkins, F.R.S., in discoursing to the Manchester Geological Society, mentioned the discovery of fresh evidence of the antiquity of man. Certain caves in Cresswell Crags, on the borders of Nottinghamshire and Derbyshire, have been recently explored, and the relics thereby brought to light prove that man lived in the hunter-stage of civilisation in the valley of the Trent and its tributaries, along with the mammoth, woolly rhinoceros, cave-hyena, lion and reindeer, and that he was capable of progress. In the lowest stratum in the caves, says Professor Dawkins, implements are found of the rudest kind and roughest form, made of quartzite pebbles from the neighbourhood. In the middle stratum implements of flint appear mingled with the others; but in the uppermost stratum the tools and implements are of flint, and of the best kind. Among these are bone needles and other appliances of bone and horn, on one of which is rudely engraved a figure of a horse. ‘This sequence,’ remarks the Professor, ‘establishes the fact, that even in the palæolithic age the hunters of reindeer, horse, mammoth, and other creatures were progressive, and that the cave-dwellers of the pleistocene age are to be looked upon from the same point of view as mankind at the present time, as “one man always living and incessantly learning.”’ If Professor Dawkins is right in his conjecture, the cave-dwellers of the very remote period which he describes were somewhat like the Eskimos of the present day. To this we may add the fact, that rude stone implements have been found in the ‘glacial drift’ in New Jersey, United States, and that some geologists regard this as proof that man lived on the earth during that far-back, dreary, and cold glacial period. In the course of the admirable surveys of their wide-spread territory carried on by authority of the United States government, discovery has been made of strange and interesting remains of habitations, implements, and pottery of a long-departed and forgotten people, who once occupied the region about the head-waters of the San Juan. Photographers and geologists among the surveying parties have by means of pictures, drawings, and descriptions produced a Report, which will in due time be published at Washington. Meanwhile models of the ancient ruins have been constructed in plaster, and compared with the dwellings of certain Indian tribes in New Mexico and Arizona; and these latter, with allowance for contact with Europeans, are at once recognised as bearing traces of the dwellings of the forgotten people. ‘Forgotten,’ says an American contemporary, ‘because the builders of the modern structures are as ignorant of the ancient builders as we are ourselves.’