War and the breed : the relation of war to the downfall of nations / by David Starr Jordan.

  • David Starr Jordan
Date:
[1915]
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: War and the breed : the relation of war to the downfall of nations / by David Starr Jordan. Source: Wellcome Collection.

    23/294 page 3
    IL FACTORS IN ORGANIC EVOLUTION Organic Evolution The term Organic Evolution applies to the orderly changes which are now taking place, or which have in the past taken place in living forms, from generation to generation. In this movement the natural histo^ of humanity, its divergence into species, races and strains, forms an integral part. For man is part and parcel of nature, governed by the same laws of birth, growth and development as the higher animals, laws shared in their degree by our other brother organisms, the plants, as well. Life in its endless movement we may perhaps liken to a great river, flowing continuously, dividing at times into smaller streams, purifying itself as it flows along and dropping to the bottom its silt and mud. So too the stream of life diverges, throw¬ ing off races and species as it flows, and purify¬ ing itself through the process of Natural Se¬ lection, that is, through the survival of those organisms adapted to their environment, while at the same time the weak, the ill-begotten and the unfitting are left without progeny. Thus a race of organisms, man, animal, or plant, comes
    digitised image 1
    digitised image 2
    digitised image 3