In view of Mr. Rollins's subsequent intimate connection with the Union Pacific Railroad Company, it is proper to remark that in congress he was a firm opponent of, and voted against, the measure adopted in July, 1864, doubling the land grant of this company, and making the government security a second instead of a first mortgage upon the road. In 1869 he was chosen secretary and assistant treasurer of the Union Pacific Railroad, having for some time previous, after the expiration of his congressional service, acted as agent of the company at Washington in the transaction of business with the government, especially in receiving the subsidy bonds. In 1871 he was elected secretary and treasurer, and officiated as such in the office of the company at Boston until March, 1877, though retaining his residence at Concord, and devoting considerable attention to New Hampshire politics. He had, after retiring from congress, been again called to the chairmanship of the state committee, and served from 1868 to 1871, inclusive, with his usual ability and success. As chairman of the committee, and _ex officio_ commander-in-chief of the Republican forces in New Hampshire for ten years, he was a tireless worker,--the very incarnation of energy and persistent industry. He had a genius for political organization and warfare. His vigor and magnetism surmounted all obstacles and swept away all opposition. His enthusiasm was contagious. Undaunted by suggestions of danger or defeat, he inspired all around him with his own indomitable courage and spirit. This was the secret of his extraordinary power, as it ever is in the world's affairs, and made him master of every field where he contended.