The shadow of the world's future, or The earth's population possibilities & the consequences of the present rate of increase of the earth's inhabitants

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Monograph

Identifikator:: 1775636852

URN:: urn:nbn:de:zbw-retromon-164018

Document type:: Monograph

Author:: Knibbs, George Handley http://d-nb.info/gnd/1045010944

Title:: The shadow of the world's future, or The earth's population possibilities & the consequences of the present rate of increase of the earth's inhabitants

Place of publication:: London

Publisher:: Ernest Benn Limited

Year of publication:: (1928)

Scope:: 131 Seiten

Digitisation:: 2021

Collection:: Economics Books

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Document type:: Monograph

Structure type:: Chapter

Title:: Chapter V. How population increases

Collection:: Economics Books

56 THE SHADOW OF THE WORLD’S FUTURE square mile, though England and Wales have no less than 671 per square mile, has been made. What actually does govern the rate of increase are factors of the following character, viz.:— (1) The force of the reproductive impulse which characterises the particular nation or com- munity as a whole, but modified by any contraceptive influences. {ii) Its social traditions as to the proper frequency of reproduction, and the constancy of such traditions. (iif) ‘The known natural resources of the territory inhabited, and also the success with which they are exploited: both of these are variable factors. (iv) The political security and the economic stability of the territory, and all factors which affect these. {v) The relative numbers in the community of each sex and age, that is, what has been called “its constitution according to sex and age.” (vi) The health of the inhabitants at each age and of each sex, and particularly of the females of child-bearing age. (vii) The characteristic ages of the males and of the females, at which marriage takes place, which 1s also a variable factor. So long as these elements, and any other elements affecting the reproductive function, remain unchanged, the rate of increase will continue uniform. Thus the normal law of increase of a population is what is known as the compound-interest-law, the interest being continually added to the principal. The con- tinuity of a particular series of rates of mortality according to sex and age has not been mentioned,

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