James Croll Quote

In geology the effects to be explained have almost all occurred already, whereas in these other sciences effects actually taking place have to be explained.

Climate and Time in their Geological Relations: A Theory of Secular Change of the Earth's Climate (1875)

In geology the effects to be explained have almost all occurred already, whereas in these other sciences effects actually taking place have to be...

In geology the effects to be explained have almost all occurred already, whereas in these other sciences effects actually taking place have to be...

In geology the effects to be explained have almost all occurred already, whereas in these other sciences effects actually taking place have to be...

In geology the effects to be explained have almost all occurred already, whereas in these other sciences effects actually taking place have to be...