| |from monad to man; | |
Immutability | |constructed the first | |
of species | |phylogenetic tree. | |
stated and | | |Founded the |Struggle
then denied. |Time, great |Time, great length of, |doctrine of |for
|length of, |definitely postulated; |homologies. |existence.
Nature |definitely |its duration practically| |
advances by |demanded. |unlimited. | |
gradations, | | | |
passing from | |Uniformitarianism of | |
one species | |Hutton and of Lyell |Founder of |
to another by| |anticipated. |teratology. |
imperceptible| | | |
degrees. |Effects of |Effects of favorable |His embryo- |
|change of |circumstances, such as |logical |
Changes in |climate, |changes of environment, |studies |
distribution |direct |climate, soil, food, |influenced |
of land and |(briefly |temperature; direct in |his |
water as |stated). |case of plants and |philosophic |
causing | |lowest animals, indirect|views. |
variation. | |in case of the higher | |
| |animals and man. | |
Effects of | | | |
changes of | |Conditions of existence | |
climate, | |remaining constant, | |
direct. | |species do not vary and | |Competition
| |vice-versa. | |strongly
Effects of | | | |advocated.
changes of | |Struggle for existence; | |
food. | |stronger devour the | |Natural
|Domesti- |weaker. Competition | |selection.
Effects of |cation |stated in case of ai or |Species are |
domesti- |briefly |sloth. Balance of |"different |Sexual
cation. |referred to. |nature. |modifi- |selection.
| |