ABSTRACT
OUR life has sometimes been compared to an arched bridge, rising to a short level middle portion and then descending again. More simply, it is comparable to an ascending and descending curve,—a trajectory. For there is a time of developing, growing, strengthening, mellowing; and then comes the time of decline, failing, ageing, and dying. This must be more or less true of all living creatures, but the details of the curve differ in different types, and there are minor ups and downs on each successive arc. C<sc>omparison of the</sc> C<sc>urve or</sc> T<sc>rajectory of</sc> L<sc>ife in</sc> P<sc>lants and</sc> A<sc>nimals</sc>. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203705568/ddd3fccb-b02e-4ec3-bb55-b316faa49ca8/content/fig_24.tif"/>
