Indian relics abound in Concord,--arrow-heads, stone chisels, pestles, and fragments of pottery; and on the river-bank, large heaps of clam-shells and ashes mark spots which the savages frequented. These, and every circumstance touching the Indian, were important in his eyes. His visits to Maine were chiefly for love of the Indian. He had the satisfaction of seeing the manufacture of the bark-canoe, as well as of trying his hand in its management on the rapids. He was inquisitive about the making of the stone arrow-head, and in his last days charged a youth setting out for the Rocky Mountains to find an Indian who could tell him that: "It was well worth a visit to California to learn it." Occasionally, a small party of Penobscot Indians would visit Concord, and pitch their tents for a few weeks in summer on the river-bank. He failed not to make acquaintance with the best of them; though he well knew that asking questions of Indians is like catechizing beavers and rabbits. In his last visit to Maine he had great satisfaction from Joseph Polis, an intelligent Indian of Oldtown, who was his guide for some weeks. He was equally interested in every natural fact. The depth of his perception found likeness of law throughout Nature, and I know not any genius who so swiftly inferred universal law from the single fact. He was no pedant of a department. His eye was open to beauty, and his ear to music. He found these, not in rare conditions, but wheresoever he went. He thought the best of music was in single strains; and he found poetic suggestion in the humming of the telegraph-wire.