Sir, This Theory, in the full extent of it, is to reach to the last Period of the Earth, and the End of all things;
But this first Volume takes in only so much as is already past, from the Origin of the Earth, to this present
time and state of Nature. To describe in like manner the Changes and Revolutions of Nature that are to come,
and see thorough all succeeding Ages, will require a steddy and attentive Eye, and a retreat from the noise of
the World; Especially so to connect the parts, and present them all under one view, that we may see, as in a
Mirrour, the several faces of Nature, from First to Last, throughout all the Circle of Successions.