Natural Increase of Mankind

"The Natural Increase of Mankind" is a comprehensive examination of the biological and statistical factors driving human population growth. Authored by James Shirley Sweeney, this scholarly work investigates the concept of "natural increase"-the difference between birth and death rates-to understand the underlying patterns of demographic evolution across various global populations.

Sweeney utilizes extensive vital statistics to analyze how biological laws and social conditions interact to shape the future of humanity. The text explores topics such as fertility trends, mortality rates, and the comparative growth of different nations during the early 20th century. By applying a scientific lens to social data, the author provides an early foundational look at the challenges and mechanics of overpopulation and societal expansion. This work is a significant contribution to the fields of demography, sociology, and biology, offering readers a clear perspective on the quantitative study of human life. It remains a valuable resource for those interested in the history of population studies and the scientific methods used to predict and understand the growth of the human species.

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