At the western end of the geological galleries of the British Museum may be seen a human skeleton imbedded in a block of limestone brought from Guadeloupe. At first sight this would seem to be a silent but unimpeachable witness to the remote antiquity of our race. On investigation, however, the fossil man is found to be in this point of view a bearer of most unreliable testimony. All fossils are not necessarily very old, and this skeleton is comparatively a modern one. The limestone in which it is imbedded is a very rapidly formed deposit of corals and small shells bound together by a kind of natural calcareous cement. The remains are those of an Indian, whose death is placed by some authorities at as recent a period as two hundred years ago. The same rock often contains remains of unmistakably recent origin. In England a coin of Edward I. has been found imbedded in it; in France a cannon buried in this hard stone was quarried out of a deposit on the lower Rhone.
Another 'fossil man' was found at Denise in Auvergne. The bones were beneath the hardened lava stream of an extinct volcano, and it was alleged that the volcanoes of Auvergne had not been active since the Christian era, as Julius Cæsar had actually encamped among them. This view was put forward more than thirty years ago. Since then, a more careful investigation of local history has proved that there were serious volcanic disturbances in Auvergne as late as the fifth century; and further, it appears that the original position of the buried man is very doubtful, as there has been a landslip on the spot.
In 1848 some human bones were found imbedded in the rocks on the shores of Lake Monroe in Florida. It was reported at the time that the rock was a coralline limestone; and on this basis Agassiz and Lyell assigned to the fossil men an age of at least ten thousand years. But the claim to this venerable antiquity was unfortunately exploded by a discovery which shewed that the evidence on which it rested was false. Pourtalès, the original discoverer, came forward to rectify the mistake. The rock in which the bones lay was not the old coralline limestone of Florida, but a recent fresh-water sandstone, which contains (besides the bones) large numbers of shells of precisely the same species as those still indigenous to the lake.