.

ny clay, called 'till' or 'hard-pan.' Through

r the till consists more

it, will be found to be the s

e earth, it is unfossiliferous. That is to say, it con

sider it, is an e

up, and not contain any evidences of life? It is as if one were to say that he had col

two places have shells ever been obtained, with certainty, from a bed in the true till of Scotland. They occur here and there in bowlder-clay, and

ift is entirely destitut

at even the stratified drift

nd, and Wales, I might add throughout the northern hemisphere, on both sides of the Atla

Ice Age," G