Now it appeared that a new and copious source of data was about to dawn, and I sought the head of the asylum with an eagerness I did not try to cloak. Doctor McNeill was a small clean-shaven man of somewhat advanced years, and I saw at once from his speech and manner that he was a scholar of no mean attainments in many branches outside his profession. Grave and doubtful when I first made known my errand, his face grew thoughtful as he carefully scanned my credentials and the letter of introduction which a kindly old ex-Indian agent had given me.