It is not until we come to sands that are almost a quarter of a million years old that we find any other particle of a sub- human being. But there are plenty of implements, and they are steadily improving in quality as we read on through the record. They are no longer clumsy Eoliths; they are now shapely instruments made with considerable skill. _And they are much bigger than the similar implements afterwards made by true man._ Then, in a sandpit at Heidelberg, appears a single quasi-human jaw-bone, a clumsy jaw-bone, absolutely chinless, far heavier than a true human jaw-bone and narrower, so that it is improbable the creature’s tongue could have moved about for articulate speech. On the strength of this jaw-bone, scientific men suppose this creature to have been a heavy, almost human monster, possibly with huge limbs and hands, possibly with a thick felt of hair, and they call it the Heidelberg Man. A THEORETICAL RESTORATION OF THE PITHECANTHROPUS ERECTUS BY PROF. RUTOT A THEORETICAL RESTORATION OF THE PITHECANTHROPUS ERECTUS BY PROF. RUTOT This jaw-bone is, I think, one of the most tormenting objects in the world to our human curiosity. To see it is like looking through a defective glass into the past and catching just one blurred and tantalizing glimpse of this Thing, shambling through the bleak wilderness, clambering to avoid the sabre- toothed tiger, watching the woolly rhinoceros in the woods. Then before we can scrutinize the monster, he vanishes. Yet the soil is littered abundantly with the indestructible implements he chipped out for his uses. THE HEIDELBERG MAN THE HEIDELBERG MAN The Heidelberg Man, as modelled under the supervision of Prof. Rutot Still more fascinatingly enigmatical are the remains of a creature found at Piltdown in Sussex in a deposit that may indicate an age between a hundred and a hundred and fifty thousand years ago, though some authorities would put these particular remains back in time to before the Heidelberg jaw- bone. Here there are the remains of a thick sub-human skull much larger than any existing ape’s, and a chimpanzee-like jaw-bone which may or may not belong to it, and, in addition, a bat-shaped piece of elephant bone evidently carefully manufactured, through which a hole had apparently been bored. There is also the thigh-bone of a deer with cuts upon it like a tally. That is all. THE PILTDOWN SKULL, AS RECONSTRUCTED FROM ORIGINAL FRAGMENT THE PILTDOWN SKULL, AS RECONSTRUCTED FROM ORIGINAL FRAGMENT _Nat. Hist. Mus._ What sort of beast was this creature which sat and bored holes in bones?