TERTIARY FORMATIONS, 191

At one place in the quarry a strong spring of water issues from a
cavity in the conglomerate rock. A striking feature of the quarry
section’ is the manner in which the later materials have been deposited
upon the uneven surface of the Eocene, each layer being thicker above
the Eocene depression, and thinner above the Eocene elevations. In this
manner the surface of each successive layer becomes more nearly level.
The present surface is quite level. .
Cretaceous strata have been exposed beneath the Eocene conglomerate, -
though not visible at the present time.
_ This locality has received considerable