But that is not the only reason why this book is a thoroughly readable portrait of Calcutta's poor, a solemn, dispassionate narrative that charts with remarkable lucidity the history of the city as the writer tries to understand why the metropolis is often cited as the worst example of human degradation. As Thomas, at present a research scholar at the Center for South Asian Studies, University of California, Berkeley, provides an anthropological insight into the daily struggle of a huge mass of people surviving on the edge of life against heavy odds in an insensitive, even hostile, urban environment, he dwells upon the impact that the city's haphazard growth, the caste system, slum politics and a host of unbridgeable divides—economic, communal, linguistic—have had on the masses and on the way they get about their benighted lives.