"You see," he said, "that it is not six feet long, and that we are still separated by a long interval from the pretended race of giants. As for the family to which it belongs, it is evidently Caucasian. It is the white race, our own. The skull of this fossil is a regular oval, or rather ovoid. It exhibits no prominent cheekbones, no projecting jaws. It presents no appearance of that prognathism which diminishes the facial angle. [1] Measure that angle. It is nearly ninety degrees. But I will go further in my deductions, and I will affirm that this specimen of the human family is of the Japhetic race, which has since spread from the Indies to the Atlantic. Don't smile, gentlemen." Nobody was smiling; but the learned Professor was frequently disturbed by the broad smiles provoked by his learned eccentricities. "Yes," he pursued with animation, "this is a fossil man, the contemporary of the mastodons whose remains fill this amphitheatre. But if you ask me how he came there, how those strata on which he lay slipped down into this enormous hollow in the globe, I confess I cannot answer that question. No doubt in the post-tertiary period considerable commotions were still disturbing the crust of the earth. The long-continued cooling of the globe produced chasms, fissures, clefts, and faults, into which, very probably, portions of the upper earth may have fallen. I make no rash assertions; but there is the man surrounded by his own works, by hatchets, by flint arrow-heads, which are the characteristics of the stone age. And unless he came here, like myself, as a tourist on a visit and as a pioneer of science, I can entertain no doubt of the authenticity of his remote origin." [1] The facial angle is formed by two lines, one touching the brow and the front teeth, the other from the orifice of the ear to the lower line of the nostrils. The greater this angle, the higher intelligence denoted by the formation of the skull. Prognathism is that projection of the jaw-bones which sharpens or lessens this angle, and which is illustrated in the negro countenance and in the lowest savages. The Professor ceased to speak, and the audience broke out into loud and unanimous applause. For of course my uncle was right, and wiser men than his nephew would have had some trouble to refute his statements. Another remarkable thing. This fossil body was not the only one in this immense catacomb. We came upon other bodies at every step amongst this mortal dust, and my uncle might select the most curious of these specimens to demolish the incredulity of sceptics.