Our tests of geologic time are denudation and deposition.

For it is not a studied knowledge; it resembles that slow geologic uncovering before which not even the deep buried bones of the prehistoric saurian remain finally hidden.

This law of evolution is equally applicable to all orders of phenomena,"astronomic, geologic, biologic, psychologic, sociologic, etc.,"since these are all component parts of one cosmos, though disguised from one another by conventional groupings.

In astronomic, geologic, and meteorologic changes, ever in progress, ever combining in new and more involved ways, we have a set of inorganic factors to which all organisms are exposed; and in the varying and complicated actions of organisms on one another we have a set of organic factors that alter with increasing rapidity.

Long enough ago, again, to allow that lowland to be sawn out into hills and valleys, ridges and gulleys, which are due to the action of Colonel George Greenwood's geologic panacea, 'Rain and Rivers,' and to nothing else.

Somewhere on the bounds of the dim ocean-world we know that there is an exiled court, a faded sort of St. Germain celestial dynasty, geologic gods, coevals of the old Silurian strata,to wit, Kronos, Rhea, Nox, et al.

In those dim geologic epochs, where annals are written on Mica Slate, Clay Slate, and Silurian Systems, on Old Red Sandstones and New, on Primary and Secondary Rocks and Tertiary Chalk-beds, there were topsy-turvyings amongst the hills and gambollings and skippings of mountains, to which the piling of Pelion upon Ossa was a mere cobblestone feat.

His most venerable records, his most ancient dates of historic chronology were but of yesterday, when compared with the age of existing species of plants and animals, or with the opening of the present geologic era.

The preponderance of land in the northern hemisphere denotes the greater intensity there of the causes of elevation at a remote geologic epoch: that is all that one can say about it: but whence that greater intensity?

It is a compound of aluminum and other matter, and, when mixed with carbon and transformed by the processes of geologic action, it becomes the shale rock which we know and which we discard as worthless slate.

There seems no doubt that, at some earlier time, it formed a part of the main island, with which it compares in geologic structure and configuration.

According to some exceptionally good geological observers, this is probably due to the fact that in a remote geologic past the ocean sent in an arm from the south, between the Plan Alto and what is now the Andean chain.

BROWN, JOHN STAFFORD, joint author Interpretation of topographic and geologic maps.

Interpretation of topographic and geologic maps, by C. L. Dake and J. S. Brown.

Pt. 1. Geologic processes and their results.

Chamberlin and Salisbury's College textbook of geology, second edition. Pt.1: Geologic processes and their results.

Geologic history at a glance.

RICHARDS, LAWRENCE W. Geologic history at a glance, by L. W. Richards & G. L. Richards,

WILLIS, BAILEY W. Geologic structures.

Interpretation of topographic and geologic maps, by C. L. Dake and J. S. Brown.

Pt. 1. Geologic processes and their results.

Geologic history at a glance.

RICHARDS, LAWRENCE W. Geologic history at a glance, by L. W. Richards & G. L. Richards,

We are, therefore, face to face with an ordered series of almost boundless ages, geologic epochs of human history succeeding each other in majestic procession, as the face of our island was now tropical, now arctic; as the seas swelled up and covered the hills, or the bottom of the deep drove back the ocean and became dry land, an unbroken continent.

With the lapse of geologic time the upper grades of animal intelligence have doubtless been raised higher and higher through natural selection.