In view of the great scarcity of buffalo and the general belief that it might be a work of some months to find any specimens, even if it were possible to find any at all, it was determined not to risk the success of the undertaking by delaying it until the regular autumn hunting season, but to send a party into the field at once to prosecute a search. It was resolved to discover at all hazards the whereabouts of any buffalo that might still remain in this country in a wild state, and, if possible, to reach them before the shedding of their winter pelage. It very soon became apparent, however, that the latter would prove an utter impossibility. Late in the month of April a letter was received from Dr. J. C. Merrill, United States Army, dated at Huntley, Montana, giving information of reports that buffalo were still to be found in three localities in the Northwest, viz: on the headwaters of the Powder River, Wyoming; in Judith Basin, Montana; and on Big Dry Creek, also in Montana. The reports in regard to the first two localities proved to be erroneous. It was ascertained to a reasonable certainty that there still existed in southwestern Dakota a small band of six or eight wild buffaloes, while from the Pan-handle of Texas there came reports of the existence there, in small scattered hands, of about two hundred head. The buffalo known to be in Dakota were far too few in number to justify a long and expensive search, while those in Texas, on the Canadian River, were too difficult to reach to make it advisable to hunt them save as a last resort. It was therefore decided to investigate the localities named in the Northwest. Through the courtesy of the Secretary of War, an order was sent to the officer commanding the Department of Dakota, requesting him to furnish the party, through the officers in command at Forts Keogh, Maginnis, and McKinney, such field transportation, escort, and camp equipage as might be necessary, and also to sell to the party such commissary stores as might be required, at cost price, plus 10 per cent. The Secretary of the Interior also favored the party with an order, directing all Indian agents, scouts, and others in the service of the Department to render assistance as far as possible when called upon. In view of the public interest attaching to the results of the expedition, the railway transportation of the party to and from Montana was furnished entirely without cost to the Smithsonian Institution. For these valuable courtesies we gratefully acknowledge our obligations to Mr. Frank Thomson, of the Pennsylvania Railroad; Mr. Roswell Miller, of the Chicago, Milwaukee and St. Paul; and Mr. Robert Harris, of the Northern Pacific.