The bearing of the conclusions which are now either established, or highly probable, respecting the origin of silicious, calcareous, and clayey rocks, and their metamorphic derivatives, upon the archaeology of the earth, the elucidation of which is the ultimate object of the geologist, is of no small importance.

France and Germany and England and the United States each maintain a school of archaeology in Athens, and each conducts careful explorations.

The earliest written records that we have now existing date from the seventh or eighth century; but undoubtedly there is preserved for us, in these materials, a picture of social conditions going back to the very beginning of our era, and coeval with the stage of civilization known in archaeology as La Tène or "Late Celtic".

Here he won the honor prize; and in 1851 was sent to Athens to study archaeology at the École Française.

See Peters in American Journal of Archaeology for January-March, 1895, and July-September, 1895; and Hilprecht, 'The Babylonian Expedition of the University of Pennsylvania,' Vol. i., Part 2, 1896.