[331]John Muir, op. cit., April, 1898, p. 510.

[332]Charles D. Warner, “Yellowstone National Park,” Harper’s, XCIV (January, 1897), 94.

[333]Annual Report 1894, p. 133.

[334]Eugene T. Allen and Arthur L. Day, Hot Springs of the Yellowstone National Park (Washington, D. C.: Carnegie Institution, 1935). Although Dr. Day was the director, the work was regarded as the valedictory of Dr. Allen.

[335]Theodore Roosevelt, “A National Park Service,” Outlook, C (Feb. 3, 1912).

[336]S. T. Mather’s “Report of The Director of The National Park Service,” Report of the Department of the Interior 1918, pp. 842-3.

[337]Reports of the Secretary of the Interior 1918, pp. 842-3.

An interesting experiment, contrary to this principle, was an attempt in 1906 to raise twelve Sequoia gigantea trees near the arch at Gardiner entrance. All of the trees died.

[338]James Bryce, “National Parks the Need of the Future,” The Outlook, CII (December 14, 1912), 811.

[339]Reports of the Secretary of the Interior 1918, pp. 813-4.