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Do large cities grow more or less rapidly than small ones? Why should the relationship between city size and population growth vary so much from one period to another? This book studies the process of population growth in a national set of cities, relating its findings to the theoretical concepts of urban geography. To test his ideas, the author studies the growth of cities in England and Wales between 1801 and 1911. His explanations draw strongly on the connection between growth and the adoption of innovations. He develops a model of innovation diffusions in a set of cities and, in support o

This paper explores the importance of patterns of urbanization and migration in Colombia for the design of appropriate policies for regional, urban, and intermediate-city development. An opening section reviews the growth of the nineteen major municipios over the period 1918 through 1964, the date of the most recent available census. When these cities are ranked by size from largest to smallest, one observes a high degree of stability of rankings over the fifty-year period considered. This stability supports the hypothesis that an articulated hierarchy and system of cities has developed. That development in turn owes much to the flow of migrants into these cities. Largely as a result of the intensive migration into the four largest cities, their share of the total population of the 19 urban municipios rose from 46 percent in 1918 to 62 percent by 1964.

Stadt- und Bevölkerungsentwicklung, besonders Nairobis. (Hem)

The purpose of this paper is to explain sudden urban growth, a global phenomenon of astonishing force that presents one of the greatest challenges facing humanity today. The forces that shape urban growth are many and varied. Such forces produce an array of histories of urbanization ranging from continuity to various catastrophic shifts along the population trajectory. It is seen that the realized history of urbanization explicitly depends on the prevailing characteristics of individuals and of the existing technology. Hence, in principle, given a knowledge of these characteristics (and given some other information explained in the text), it would be possible to predict the path toward urbanization taken by simple worlds such as those considered here, Different outcomes would then be attributed to and explained by different behavioural and technological circumstances.