I find in my diary of that excursion a catalogue of the birds and other animals which he himself had pointed out to me, making me marvel again at the rapid observation which he had made part of his physical equipment. I note: “During the first four days we have been in the Park, we have seen chipmunk, red squirrel, little black bear, elk watering with the horses, muskrat in the streams, golden eagle, Peregrine falcon and other varieties, red-tailed hawk and pigeon hawk, Clark’s crow, Canada jay, raven, bittern, Canada goose, mallard and teal ducks, chicadee, nuthatch, dwarf-thrush, robin, water oozel, sunbird, longspur, grass finch, yellow-crowned warbler, Rocky Mountain white-throated sparrow, song-sparrow, and wren.” Each one of the above I saw with the eyes of Theodore Roosevelt, and can still hear the tones of his voice as he described to me their habits of life and the differences between them and others of their kind. To him this trip must, of necessity, have been somewhat dull, based as it was upon the companionship of three women who were not hunters; but never once during those weeks did he seem anything but happy, and as far as we were concerned, to see the beauties of nature through those ardent eyes, to hear the bird-notes through those ears, attuned to each song, and to listen constantly to his stories of wood and plain, his interpretation of the lives of those mighty pioneer men of the West--all of this comes back to me, as a rare experience which I have gladly stored away in what Emerson calls “the amber of memory.” How we laughed over the strange rules and regulations of the park! Fierce bears were trapped, but could not be killed without the kind permission of one of the secretaries in Washington, the correspondence on the subject affording my brother infinite amusement. _His_ methods under like circumstances would have been so very different!