Following the establishment of the first three fraternities, Chi Psi and Beta Theta Pi in 1845 and Alpha Delta Phi in 1846, whose early adventures have been noted, some twenty-eight other general fraternities have been established. Among the first of these were Delta Kappa Epsilon, 1855; Sigma Phi, 1858; Zeta Psi, 1858; Psi Upsilon, 1865; Beta Theta Pi, which had lapsed and was re-established in 1867; Delta Tau Delta, 1874, re-established 1900; Phi Kappa Psi, 1875; Delta Upsilon, 1876; Sigma Chi, 1877; Phi Delta Theta, 1864, re-established in 1887; Sigma Alpha Epsilon, 1888, and Theta Delta Chi in 1889. Since 1890 this list has been more than doubled and includes the re-establishment in 1902 of Phi Gamma Delta originally established in 1885, and Alpha Tau Omega first established in 1888 and re-established in 1904. [Illustration: THE TUG OF WAR ACROSS THE HURON The Freshman losing in the annual Freshman-Sophomore Contests] [Illustration: FOUR SOCIETY HOUSES Psi Upsilon Sigma Phi Phi Delta Theta Collegiate Sorosis] There are now thirteen sororities in the University. The establishment of the first one caused great amusement among the fraternities. This was Kappa Alpha Theta, which came in 1879 but fell by the wayside six years later and was not revived until 1893. The second arrival on the scene, Gamma Phi Beta, came in 1882, followed by Delta Gamma in 1885, and Collegiate Sorosis in 1886. The first professional fraternity to be established was Phi Delta Phi, a law fraternity, which organized its parent chapter in the University in 1869. It was not until 1882 that the medical fraternity, Nu Sigma Nu, and the dental fraternity, Delta Sigma Delta, established their Alpha chapters at Michigan. Since that time fourteen more professional fraternities have appeared. These fraternities, together with the three house clubs, Trigon, Emerites and Monks, which in effect are maintained as fraternities, bring the total number of these organizations in the University to sixty-four, with an estimated active membership of something over 2,000 University men and women.