thusiastic. When he had found in his great outdoor museum some peculiar treasure he talked over his find with me by letter.
Muir's letters were never commonplace and sometimes they were long and rich. I preserved them all; and when, a few years ago, an Alaska steamboat sank to the bottom of the Yukon, carrying with it my library and all my literary possessions, the loss of these letters from my friend caused me more sorrow than the loss of almost any other of my many priceless treasures.
The summer of 1881, the year following that of our second canoe voyage, Muir went, as scientific and literary expert, with the U. S. revenue cutter Rogers, which was sent by the Government into the Arctic Ocean in search of the ill-fated De Long exploring party. His pub-
