PREHISTORIC MEN 25
low of a hill, he cannot multiply it into a vision of the valley of dry bones. In dealing with a past that has almost entirely perished, he can only go by evidence and not by experiment. And there is hardly enough evidence to be even evidential. Thus while most science moves in a sort of curve, being constantly corrected by new evidence, this science flies off into space in a. straight line uncorrected by anything. But the habit of forming conclusions, as they can really be formed in more fruit- ful fields, is so fixed in the scientific mind that it cannot resist talking like this. It talks about the idea suggested by one scrap of bone as if it were something like the aeroplane which is constructed at last out of whole scrapheaps of scraps of metal. The trouble with the professor of the prehistoric is that he cannot scrap his scrap. The marvellous and triumphant aeroplane is made out of a hundred mistakes. The student of origins can only make one mistake and stick to it. We talk very truly of the patience of science; but in this department it would be truer to talk of the im- ‘patience of science. Owing to the difficulty above de- scribed, the theorist is in far too much of a hurry. We have a series of hypotheses so hasty that they may well be called fancies, and cannot in any case be further cor- rected by facts. The most empirical anthropologist is here as limited as an antiquary. He can only cling to a fragment of the past and has no way of increasing it for the future. He can only clutch his fragment of fact, almost as the primitive man clutched his fragment of flint. And indeed he does deal with it in much the same way and for much the same reason. It is his tool and his only tool. It is his weapon and his only weapon.
