The union stimulated renewed activity and new chapters were established in the following order: Beta, Muhlenberg (1868); Xi, Cornell (1868); Omega, Dickinson (1869); Sigma, Wofford (1871); Nu, Washington and Lee (1872); Psi, Lehigh (1872); Kappa, Brown (1872); Tau, MIT (1873); Phi, Amherst (1873); Chi, Ohio Wesleyan (1873); and Rho, Lafayette (1874).
On June 16, 1868, the Sigma Chapter at Princeton was struggling and its charter was withdrawn, as was the Theta Chapter at Gettysburg on June 19, 1876. At the convention in 1869, a grand seal consisting of a reproduction of the monogram of the badge in the center with the wording “The Secret Order of Chi Phi” around the perimeter was established. There were constitutional amendments to abolish the rights of the “Parent Chapter” and place all authority in the annual convention. In 1867, the use of the Greek letters for the names of the officers became official and in 1870 a new officer, the Grand Delta, was authorized and the development of a financial system for the Fraternity began, and in 1868, the first publication of the Chi Phi Chakett appeared by the Zeta Chapter.