SELECTIVE OPPORTUNISM 

 THE SUREST WAY 



^ Abel Wolman 



Dr. Gulick adds another dramatic exposition of the characteristics and 

 problems of urban explosion to the already overflowing series of diag- 

 nostic and epidemiologic reviews of this prime headache of modern 

 society. Although he refers to this phenomenon as new (a view which 

 I have), he views it primarily as peculiar to this country. The phe- 

 nomenon is, of course, universal in impact, whether in London, Paris, 

 Bangkok, Tokyo, Hongkong, or Manila. 



Throughout the world, people flock to the urban centers for pre- 

 sumed opportunities for a better life. They surround the old core 

 cities with amorphous, unco-ordinated, inadequately serviced incu- 

 bators for the worst slums of the not too distant future. Dr. Gulick 

 succinctly summarizes the resultant pressures and problems of these 

 modern sequels of population growth. They bring demands for higher 



ABEL WOLMAN, Professor of Sanitary Engineering at Johns Hopkins 

 University, is Chairman of the permanent Committee of Sanitary Engineers for 

 the Pan American Sanitary Bureau. He is Chairman of the Sanitary Engineer- 

 ing Committee of the Division of Medical Sciences, National Research Coun- 

 cil; former Chief Engineer of the Department of Health of Maryland; and has 

 been consulting engineer to such organizations as the City of Baltimore, the 

 United States Public Health Service, TVA, Atomic Energy Commission, and 

 the Army. Professor Wolman has also been president of the American Water 

 Works Association and is a former president of the American Public Health 

 Association. He vi^as born in Baltimore, Maryland, in 1892, and received his 

 degree in engineering from Johns Hopkins University in 1915. 



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