Mr. Stevenson was born in Maysville, Ky., December 24, 1840. He early displayed a taste for exploration and natural history, and such reading as his limited education permitted was devoted to books treating of these subjects. At the age of thirteen he ran away from home and joined a party of Hudson's Bay Fur Company's traders, bound up the Missouri River. On the same boat was Dr. F. V. Hayden, then on his way to explore the fossiliferous region of the Upper Missouri and Yellowstone Rivers. Noticing Stevenson's taste for natural history he invited him to join him in his work. Stevenson accepted; and thus began a relation which lasted for more than a quarter of a century, and which gave direction to the rest of his life. [Illustration: JAMES STEVENSON.] He was engaged in several explorations between 1850 and 1860, connected with the Pacific railroad surveys, and with others under Lieutenants G. K. Warren and W. F. Raynolds. In 1861 he entered the Union service as a private soldier, and left it in 1865 with an officer's commission. After the war he resumed his connection with Dr. Hayden. He was mainly instrumental in the organization of the United States Geological Survey of the Territories in 1867, and during the next twelve years he was constantly engaged in promoting its welfare. When the consolidation of the various geographical and geological surveys took place in 1879, under the name of the United States Geological Survey, he became associated with the United States Bureau of Ethnology. He had always shown a taste for ethnological investigations and his scientific work during the rest of his life was in this direction, principally among the races of New Mexico and Arizona. He died in New York City July 25, 1888. In the paragraph quoted above from Dr. Hayden there is more than any but the few who are familiar with the early history of the geological surveys will understand. It rarely happens that a master is so far indebted to a servant for his success, as was true of the relation of Dr. Hayden and James Stevenson. Stevenson's great talent lay in the organization and management of men. His administrative ability in the field was invaluable to the Survey of which Hayden was chief, and his extraordinary influence with Congressmen was a vital element in its early growth. His part in the Yellowstone Explorations of 1871 and 1872 is second to none in importance. It will not be forgotten that he was the first to build and launch a boat upon the Yellowstone Lake, nor that he, and Mr. Langford who was with him, were the first white men to reach the summit of the Grand Teton. _Storm Peak_ (9,500)--E: 8--1885--U. S. G. S.--Characteristic. _Survey Peak_ (9,200)--T: 4--1885--U. S. G. S. This mountain was a prominent signaling point for the Indians. It was first named Monument Peak by Richard Leigh who built a stone mound on its summit. _Table Mountain_ (10,800)--O: 14--1885--U. S. G. S.--Characteristic.