The Regulation of Human Growth1

I shall not presume upon my slight personal acquaintance with Harold Jones here in Berkeley amongst so many of you who knew, respected, and loved him. I can only say that the invitation to do what honour I can to his craftsmanship, integrity, and learning has given me a great sense of pleasure and of obligation. The first time I met Harold Jones I was visiting Frank Shuttleworth here. I was a complete novice; I had written nothing and knew precious little. But I was just as interested in human development then as now. Accordingly Harold Jones treated me on that occasion precisely as on later ones, that is to say with warmth, encouragement, and good humour. Harold Jones was a craftsman; his intellectual products carried the imprint of care, precision, and patience. His craftsmanship appeared not only in his published scientific work but also in the care and persistence which he gave to building up in this University city and in this country structures of research and scholarship in human development which would be self-sustaining and which would enrich to an increasing degree the whole community. He had an apparently natural sense of biological time. Though his interest in child development itself owed much to Mary Jones, it reflected accurately his deeper interest-to see the underlying continuity of things and to feel the flow of the past and the expectation of the future in all the changes of species and of culture. For Harold Jones at base was a conservationist. It was no coincidence that while his father was manager of an experimental farm he became Director of an Institute of Child Welfare. Together with Herbert Stolz and his other colleagues, and backed from the first by Larry Frank, he built up the Institute during the 1930's into one of the world's great centres for research in child development. He attracted round him people of diverse