duration, with the kind of results we could obtain for rapid publication, and with cycles that fall within the span of an individual life. Even now we have insufficient data to decide whether cold winters come in periods of seventy or eighty years, a ridiculously easy problem which a little organization would have solved. But every year will add to the fund of carefully recorded data. Men are learning to co-operate through time. Experiments initiated by the father are continued by the son, and succeeding generations will record the results.
Organization provides a workable alternative to the invention of Methuselahs; though it would simplify things considerably if Nature could see her way to adopt the suggestion of Mr Shaw. More than anywhere else perhaps this kind of organization is needed for sociological and biological experiment. By that way we shall obtain the knowledge upon which scientific prophecy may be based. In the meantime, let us speculate. Speculation is not a deadly sin, but an aid to true perspective, and it is suggestive of good hypotheses. Nor need our speculations, even now, be wholly in the air. We have the broad tendencies of the past on which to base our forecast. The danger lies in a premature attempt to elucidate the details. The older prophets tried to foresee particular events, the newer are content with the general tendencies. Knowledge grows not like a crystal by minute accretions, but like a work of art, from outline down to detail guided by inspiration—which, in science, is speculation.
C. A. M.