After this event was duly announced, a considerable number of geologists flocked to Abbeville, about the middle of the month of April. The Abbé Bourgeois, MM. Brady-Buteux, Carpenter, Falconer, &c., came one after the other, to verify the locality from which the human jaw-bone had been extracted. All were fully convinced of the intact state of the bed and the high antiquity of the bone which had been found. Boucher de Perthes also discovered in the same bed of gravel two mammoth's teeth, and a certain number of wrought hatchets. Finally, he found among the bones which had been taken from the Menchecourt quarries in the early part of April, a fragment of another jaw-bone and six separate teeth, which were recognised by Dr. Falconer to be also human. The jaw-bone found at Moulin-Quignon is very well preserved. It is rather small in size, and appears to have belonged to an aged individual of small stature. It does not possess that ferocious aspect which is noticed in the jaw-bones of certain of the existing human races. The obliquity of the molar-tooth may be explained by supposing some accident, for the molar which stood next had fallen out during the lifetime of the individual, leaving a gap which favoured the obliquity of the tooth which remained in the jaw. This peculiarity is found also in several of the human heads in the collection of the Museum of Natural History in Paris. [Illustration: Fig. 1.--Human Jaw-bone found at Moulin-Quignon, near Abbeville, in 1863.] The jaw-bone of the man of Moulin-Quignon, which is represented here (fig. 1) in its natural size, and drawn from the object itself, which is preserved in the Anthropological Gallery of the Museum of Natural History of Paris, does not show any decided points of difference when compared with those of individuals of existing races. The same conclusion was arrived at as the result of the comparative examination which was made of the jaw-bones found by MM. Lartet and De Vibraye in the caves of Aurignac and Arcy; the latter remains were studied by M. Quatrefages in conjunction with Pruner-Bey, formerly physician to the Viceroy of Egypt, and one of the most distinguished French anthropologists. On the 20th of April, 1863, M. de Quatrefages announced to the institute the discovery which had been made by Boucher de Perthes, and he presented to the above-named learned body the interesting object itself, which had been sent from Abbeville. When the news of this discovery arrived in England it produced no slight sensation.