The 1910 Senior County Fair will be opened by President Taft's pressing a solid ivory button in the Pink Room of the White House promptly at 9 P. M. tomorrow night. In the Dining Room of the Union, many sideshows will burst into life, the African Dodger will resound with the lusty spheroids, and the Fat Lady will draw in a long breath. A continuous amateur pie-eating contest will provide many opportunities for skill and capacity, and there will be other games where magnificent prizes reward the successful. The great Siberian Sea-Serpent vies with the Tattooed Albino, and the Empire City Quartet with Signor Caruso and the Black Hand Chorus. Seniors are asked to come in costume if possible. Tickets at 25 cents may be obtained at the Co-operative branch. Leavitt & Peirce's, the Union, and from members of the committee.