One evening, just before sunset, grown sleepy in spite of the gathering cold, he sat down on one of the two steep grassy slopes that bordered the road. His feet were bare now, bare and brown, for his shoes had come to such plight that it was a relief to throw them away; but his soles had grown like leather. They rested in the dry shallow rain-channel, and his body leaned back against the slope.
On the N.W. side of this hill, a rain-channel exposes a section of about twenty feet in thickness, of which the upper part consists of black vegetable mould, evidently washed down from the heights above, and the lower part of less black earth, abounding with young and old shells, and with their fragments: part of this earth is slightly consolidated by calcareous matter, apparently due to the partial decomposition of some of the shells.