I desire first of all to express my appreciation of the honour you have done me in electing me President of the Society. Faced with the necessity of choosing a subject suitable for a Presidential Address, it occurred to me that a brief survey of the distribution of Man in East Anglia during the Neolithic, Bronze and Early Iron Ages might be appropriate. Selection of the region wherein the Society was born, and which inspired the fruitful work of its founders and their successors, is intended as a tribute of gratitude from one who has profited by the study of the many important Papers published in its Proceedings.
The general principles, recognized as governing Man's distribution under uncivilized or semi-civilized conditions in Britain, may first be summarized.
In the Lowland area to which East Anglia belongs soil is the chief determinant. There are two main types of soil: pervious, such as that overlying chalk, sand, gravel; impervious, as that overlying clay. The pervious soils induce an open type of country, or carry forest with relatively thin undergrowth; the rapidity with which such soils dry up after rain, the ease with which a scratch agriculture can be practised on them, their suitability for pastoral life, the ease of movement on them—all these factors render them attractive to early Man. As a group they form the Area of Primary Settlement. The impervious clay soils, on the other hand, carry forest with dense undergrowth, are difficult to clear, and when cleared difficult to cultivate with primitive tools. To the physical unsuitability of such soils for settlement there is added a second deterrent; water-laden soils under the conditions of savage life produce disease in man and beast. But when cultivation of such soils is possible they are found to yield the heaviest crops to tillage, being especially good for corn-growing. They are, then, utilized when civilization reaches a certain level, and have accordingly been grouped as the Area of Secondary Settlement.